Munich, Germany – 9am EST, June 4th, 2025 – SimScale, the leader in cloud-native engineering simulation, today announced a new native integration with nTop, the leader in computational design software for high-performance engineering. Engineers can now import implicit geometry representations directly from nTop into SimScale, unlocking unprecedented speed and robustness in the simulation and design exploration of high-performance heat exchangers.
This new capability significantly accelerates simulation of full-fidelity flow and thermal behavior in complex, performance-critical heat exchanger designs. By eliminating the traditional bottlenecks of CAD conversion and surface meshing, this workflow opens the door to broader design exploration and innovation for complex DfAM products.
“Traditional simulation pipelines struggle with the complexity of high-performance heat exchanger geometries because they require faceted CAD data, which is a time-consuming step” said Alexander Fischer, Product Manager and Co-founder at SimScale. “With this new integration, engineers can move from design to simulation in a fraction of the time, much more reliably.”
“Traditional CAD-to-simulation workflows have always been a major bottleneck in high-performance heat exchanger design—you’re constantly dealing with meshing failures and geometry conversion issues that kill iteration speed,” said Bradley Rothenberg, co-founder and CEO of nTop. “This native integration with SimScale eliminates that friction — Engineers can now move directly from nTop implicit geometry into a robust thermal and flow solver without the preprocessing headaches, enabling teams to iterate faster and explore design spaces that were previously impractical to simulate.”
Unlike legacy simulation tools that rely on fragile CAD imports and require extensive manual preprocessing, SimScale’s new functionality—built in close collaboration with nTop—allows engineers to work directly with implicit models. This enables robust and accurate flow and conjugate heat transfer (CHT) simulations powered by SimScale’s immersed boundary method (IBM), which natively handles implicit geometries without requiring any conversion or geometry discretization.
The result: streamlined, high-fidelity simulation workflows that enable faster iteration, deeper design exploration, and better-performing heat exchangers. The value of this capability has already been proven at customers such as Siemens Energy, who are using SimScale to simulate high performance heat exchanger performance.
Implicit modeling and direct simulations on implicit geometry is a real step change in speed and robustness of optimization workflows and necessary to unlock the real potential of additive manufacturing.
Markus Lempke, Computational Designer at Siemens Energy
All SimScale users, including Community users and Professional license holders, can now take advantage of this new capability to import implicit models from nTop into SimScale, enabling fast and robust simulation workflows for DfAM products.
About SimScale
SimScale is the world’s first cloud-native engineering simulation platform, offering powerful and accessible computational fluid dynamics (CFD), finite element analysis (FEA), electromagnetic, and thermal simulations. With SimScale, every engineer has access to the power of simulation without the need for expensive hardware or software. SimScale is trusted by >700K engineers worldwide to make informed decisions, optimize designs, and innovate faster. Visit www.simscale.com for information.
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About nTop
nTop is the computational design platform for high-performance engineering. Built for teams solving the world’s hardest engineering challenges—from hypersonics to heat exchangers—nTop combines GPU-accelerated modeling, in-the-loop simulation, and automation to help engineers generate and evaluate thousands of design variants, including geometry and physics results, in hours, not weeks. Trusted by over 450 teams across aerospace, defense, automotive, and energy, nTop redefines how design is done, turning engineering logic into reusable workflows, enabling rapid exploration of the design space, and shortening product cycles from concept to production. For more information, visit www.ntop.com.
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