
Simulation Without the Mesh
Deterministic, Operator-Based Simulation — From Millions of Grid Cells to ~100 Modes

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Traditional simulation frameworks—CFD, FEA, and their variants—approximate reality by discretizing space into millions or billions of grid cells, then numerically solving governing equations across each element. This approach assumes that fidelity comes from resolution: more cells, more accuracy. In practice, however, much of this dimensionality is redundant. The system’s true behavior is not distributed uniformly across all degrees of freedom; instead, it is concentrated in a small number of dominant modes. What engineers interpret as “complexity” or “noise” is often the byproduct of representing structured dynamics in an over-resolved coordinate system. The mesh is not revealing physics—it is obscuring it.
Our framework reverses this paradigm. Rather than starting from discretization, we begin by identifying the operator that governs the system and extracting its spectral structure directly. Through modal decomposition and operator learning, we observe that real physical systems—across structures, thermal fields, and even quantum hardware—collapse onto low-dimensional manifolds. In many cases, 2–3 modes capture over 95–99% of system behavior. This is not an approximation imposed for efficiency; it is an empirical property of the system itself. By evolving these modes through a learned operator, we simulate the system’s dynamics directly—without resolving every point in space. The result is a reduction from millions of grid cells to on the order of ~100 meaningful degrees of freedom.
This fundamentally redefines simulation. Instead of solving equations over space, we evolve structure over modes. Instead of iterative convergence loops, prediction emerges directly from the operator’s spectrum. Instead of introducing turbulence models or stochastic assumptions to explain residuals, we resolve them as interactions between modes. In this sense, simulation transitions from approximation to representation. We are no longer asking, “How finely must we discretize to approximate reality?” but rather, “What is the minimal structure that fully describes it?” This shift aligns simulation with the underlying mathematics of motion—operator theory, Sturm–Liouville structure, and spectral evolution—rather than with numerical convenience.
For industry, the implications are immediate and profound. Engineering teams can replace days or weeks of simulation time with near-instant evaluation, enabling real-time design iteration and feasibility checks. Compute costs drop dramatically, removing dependence on large HPC clusters. More importantly, insight improves: instead of sifting through massive field outputs, engineers work directly with the modes that govern behavior—making systems easier to understand, optimize, and control. Whether in telecom towers, data centers, aerospace structures, or manufacturing processes, this translates into faster development cycles, reduced over-engineering, and the ability to predict and mitigate failure modes before they emerge. In general, by removing degrees of freedom by orders of magnitude, we transform simulations that traditionally take weeks into results delivered in minutes.



A key distinction in our approach is that we are not compressing simulation—we are uncovering its native structure. Traditional reduced-order models attempt to approximate a high-dimensional system after it has already been simulated. In contrast, our framework identifies that the system itself never truly occupied that high-dimensional space to begin with. The dominant modes are not artifacts of compression; they are the natural coordinates of the system’s behavior. This shift—from approximation to discovery—changes how engineers interpret both data and physics.
Another important consequence is interpretability. In conventional simulation, engineers are often left analyzing massive field outputs—velocity fields, pressure distributions, thermal gradients—without a clear understanding of which components actually govern system behavior. By operating directly in modal space, we expose the few degrees of freedom that matter. This enables engineers to reason about systems in terms of cause and effect, rather than post-processing vast datasets. The result is not just faster simulation, but clearer engineering insight.
Our framework also changes how variability and uncertainty are handled. In traditional methods, unexplained residuals are often attributed to noise and handled through turbulence models or stochastic corrections. In our work, these residuals are not discarded—they are examined as structured interactions between modes. What appears random in a grid-based representation frequently resolves into coherent behavior when expressed in the correct basis. This allows systems to be modeled with greater fidelity without introducing additional complexity.
Finally, this approach enables a fundamentally different relationship between simulation and real-world data. Because the operator is learned directly from observed system behavior, simulation becomes naturally aligned with empirical reality. Models are no longer purely theoretical constructs that require calibration—they evolve alongside the system itself. This creates the foundation for continuously updating, real-time digital twins that remain accurate as conditions change, rather than degrading over time.

Traditional digital twin platforms—whether from Siemens, ANSYS, Dassault Systèmes, or Ansys Twin Builder—are built on top of the same foundational paradigm: mesh-based simulation, reduced-order approximations, and data overlays. While these platforms are powerful, they fundamentally rely on discretizing physics into high-dimensional representations and then attempting to simplify or calibrate them after the fact. As a result, what is called a “digital twin” is often a combination of simulation outputs, statistical models, and sensor dashboards—useful, but not truly reflective of how the system evolves.
Even more modern approaches—AI-driven twins, surrogate models, and reduced-order modeling techniques—do not resolve this limitation. They compress or approximate the output of simulation, rather than identifying the structure that governs it. These methods improve speed, but they remain dependent on the same underlying assumptions: that system complexity must be approximated, that variability is stochastic, and that accuracy requires either repeated simulation or continuous retraining. The result is a twin that must be maintained, recalibrated, and often revalidated as conditions change.
Our framework departs from this entirely. By identifying the governing operator and its dominant modes directly from data, we do not approximate the system—we represent it in its natural coordinates. The digital twin is not a reduced version of a high-dimensional model, nor is it a statistical surrogate. It is the system’s intrinsic structure, evolving in time. This allows the twin to remain stable, interpretable, and predictive without relying on repeated simulation loops or external correction layers.
This enables something no existing platform delivers: a truly living digital twin. Because the operator captures how the system evolves, new data does not require rebuilding the model—it refines the structure. The twin stays aligned with reality as conditions change, preserving accuracy over time rather than degrading. Instead of a static model that must be managed, the twin becomes a continuously evolving representation of the system itself.
For industry, this distinction is decisive. Engineering teams no longer need to choose between accuracy and speed, or between simulation and real-time insight. With a structurally grounded digital twin, systems can be monitored, predicted, and optimized continuously—without re-meshing, re-solving, or retraining. This transforms the digital twin from a visualization or analytics tool into a true operational asset—one that directly informs design, control, and decision-making at every stage of the system lifecycle.



Scientific Validation
From infrastructure to quantum systems, our results demonstrate that structure—not randomness—governs real-world behavior.
This paper presents a fundamentally different way of interpreting complex physical systems by analyzing real superconducting qubit calibration data through an operator-theoretic lens. Rather than assuming that variability in quantum systems is inherently stochastic, the study constructs a physically meaningful state space and applies modal decomposition to reveal the system’s intrinsic structure. The key finding is that what appears to be a six-dimensional system in measurement space collapses onto a low-dimensional manifold, with over 96% of variance captured by just two modes and nearly all behavior by three . This demonstrates that the system’s true degrees of freedom are far fewer than traditionally assumed, and that its behavior is governed by a constrained set of dominant modes rather than diffuse randomness.
Building on this structural insight, the paper introduces an operator-based evolution model to test whether this low-dimensional structure governs system dynamics over time. By learning a linear operator that maps the system forward, the study shows a 37.7% reduction in prediction error compared to a persistence baseline . This is a critical result: in systems dominated by noise, simple baselines are typically difficult to outperform. The improvement demonstrates that qubit behavior is not memoryless but follows a structured, partially predictable trajectory. In effect, the system retains information about its own evolution, indicating that what is commonly treated as “noise” actually contains embedded structure when viewed in the correct representation.
For science and mathematics, this work bridges classical spectral theory and modern data-driven analysis in a meaningful way. It extends concepts from Sturm–Liouville theory and operator theory—traditionally applied to idealized systems—into real, noisy physical environments. The findings support a broader hypothesis: that apparent randomness is often not fundamental, but emerges from observing structured dynamics in an incomplete or misaligned basis. This reframes how motion, variability, and even time evolution are understood, suggesting that systems evolve along constrained manifolds defined by underlying operators, rather than through purely stochastic processes.
For industry and simulation, the implications are immediate and transformative. If complex systems—from quantum hardware to thermal and structural systems—are intrinsically low-dimensional, then the need for high-dimensional, mesh-based simulation is fundamentally reduced. Instead of modeling millions or billions of degrees of freedom, systems can be represented and evolved through a small number of dominant modes. This shifts simulation from brute-force approximation to structure-driven prediction, enabling faster computation, greater interpretability, and real-time decision-making. In this sense, the paper is not just a study of quantum systems—it is a proof point for a new paradigm of simulation itself.





This whitepaper establishes a fundamentally new interpretation of structural dynamics by analyzing wind-driven tower systems through an operator-based spectral framework rather than traditional mesh-based simulation. Using high-fidelity OpenFAST data, the study demonstrates that tower behavior—commonly treated as stochastic vibration—exhibits strong spectral concentration and low-dimensional structure. Instead of energy being distributed across a broad range of frequencies, the system is dominated by a small number of coherent modes, with a primary structural frequency near 0.35 Hz and a secondary forcing scale near 0.05 Hz . This immediately challenges the long-standing assumption that residual vibration is inherently random.
Building on this observation, the paper shows that the system’s apparent high-dimensional complexity collapses onto a remarkably low-dimensional manifold. Through modal decomposition, it is demonstrated that over 97% of the system’s energy is captured by a single dominant mode, and over 99.5% by just two to three modes . This result is critical: it proves that the true degrees of freedom governing tower dynamics are orders of magnitude smaller than those implied by mesh-based simulation. What appears complex in time-domain signals is revealed to be structured oscillation within a tightly constrained spectral space.
The work then advances from structure to prediction by constructing a reduced operator directly from the data. This operator governs the evolution of the system within its low-dimensional modal space and consistently outperforms baseline persistence models in predicting future behavior. Importantly, this predictive capability emerges without introducing stochastic models, filtering techniques, or external forcing assumptions. Instead, prediction is shown to be an intrinsic consequence of the operator’s spectral structure, reinforcing the central thesis that system dynamics are governed by deterministic modal interactions rather than random perturbations.
For engineering, simulation, and industry, the implications are profound. The study demonstrates that traditional mesh-driven approaches—requiring millions of degrees of freedom—are not fundamentally necessary to capture system behavior. By identifying and evolving the governing modes directly, simulation can be reduced to a compact, interpretable, and computationally efficient framework. This represents a shift from approximation to representation: from resolving every local interaction to understanding the global structure that governs motion. More broadly, the whitepaper provides strong empirical evidence for a unifying principle—that across physical systems, what is perceived as noise is often unresolved structure, and that true understanding comes from identifying the operator that defines it.



For more than a century, the dominant framework for understanding complex systems has rested on a dual approximation: discretization and probability. From the development of statistical mechanics to the formalization of stochastic processes by Andrey Markov and Andrey Kolmogorov, irregularity in physical systems has been interpreted as intrinsic randomness. In parallel, engineering disciplines have relied on mesh-based methods to approximate reality through vast numbers of local degrees of freedom. This combined paradigm—resolve what you can, and treat the rest as noise—has shaped modern science, simulation, and engineering. It has been extraordinarily successful, but it embeds a fundamental assumption: that when structure is not visible, it does not exist.
This work challenges that assumption at its core. By analyzing raw telemetry from a real hardware system, it demonstrates that behavior long interpreted as stochastic is, in fact, structured and low-dimensional. What appears as noise is revealed to be the projection of a small number of interacting modes evolving under a governing operator. The most striking result—where an apparently random signal is reconstructed almost perfectly from the interaction of two structured channels—provides direct empirical evidence that randomness, in this context, is not fundamental. It is a consequence of observing the system in an incomplete representation.
Historically, this result sits in direct continuity with some of the deepest developments in mathematical physics. The operator framework employed here traces back to Leonhard Euler and Joseph-Louis Lagrange through variational principles, and to Sturm–Liouville theory, where systems are understood through their eigenmodes and spectral structure. In those classical settings, structure is explicit and deterministic. What this paper shows is that the same principles extend beyond idealized systems into real, noisy hardware. The spectral theorem is no longer confined to clean analytical models—it manifests directly in empirical data.
Equally important is the implication for how we interpret uncertainty itself. If systems evolve within constrained spectral manifolds, then what we call noise is often unresolved modal interaction rather than intrinsic unpredictability. This reframes probability not as a fundamental description of nature, but as a secondary tool—a way of modeling systems when their governing structure has not yet been identified. In this light, stochastic models and mesh-based simulations remain useful, but they are approximations of a deeper, operator-governed reality.
From a scientific standpoint, this introduces a new way of thinking about measurement and observation. Rather than assuming that increased resolution will eventually “average out” noise, this work shows that the correct transformation of the data—into its spectral coordinates—reveals order immediately. The system does not need to be simplified; it needs to be represented correctly. This distinction is subtle but profound, and it aligns directly with the mathematical idea that the choice of basis determines whether structure is visible or hidden.
For engineering and industry, the implications are immediate. Systems previously treated as unpredictable can now be understood, modeled, and forecasted through their governing modes. This eliminates the need for heavy stochastic modeling and dramatically reduces computational burden. More importantly, it enables a new class of predictive systems that are both interpretable and aligned with real-world behavior—systems that evolve with their underlying structure rather than being recalibrated around it.
In conclusion, this work establishes a rare and important convergence between theory, experiment, and physical realization. The operator framework provides the mathematical foundation, the telemetry provides empirical validation, and the TCNCZ system—developed by Robert Kostyk—provides the physical embodiment of these principles. Together, they demonstrate that what has long been considered noise is, in fact, structured evolution within a constrained spectral geometry. This is not merely an incremental improvement—it is a reframing of how we understand motion, uncertainty, and reality itself.
