White Papers

Positive-displacement and centrifugal pumps pose substantial setup and modeling challenges in many simulation software suites. This white paper examines the modeling approaches CONVERGE offers for three positive-displacement pump types (reciprocating piston, gerotor, and vane) and a representative centrifugal dynamic pump.

Simulating a body in white geometry moving through an automotive paint bake oven poses many challenges, including the wide range of length scales, complex moving geometry, and heat transfer. With CONVERGE’s autonomous meshing capabilities, including automatic mesh generation, fixed embedding, and Adaptive Mesh Refinement, this complex problem becomes simple to simulate.

Simulating positive-displacement compressors allows you to study the phenomena that affect efficiency, including leakage flows, viscous losses, and pressure pulsations. However, the complex geometries and moving components of compressors can be challenging to model. CONVERGE’s unique autonomous meshing capabilities make it easy to simulate the complex motion of positive-displacement compressors with minimal setup time.

Studying the thermal stresses in an internal combustion engine is critical for designing a durable machine that can withstand combustion processes long-term. CONVERGE offers a robust detailed chemistry solver for modeling in-cylinder combustion dynamics and a conjugate heat transfer model to efficiently calculate solid temperature distributions in combustion engines.

Numerical viscosity is a nonphysical artifact of CFD that arises from solving the Navier-Stokes equations in approximate form on a discrete mesh. CONVERGE features a variety of numerical modeling techniques to minimize the effects of this error and improve the quality of your solution.

With large eddy simulations (LES), detailed chemistry, and sufficient grid resolution, CONVERGE can resolve turbulence chemistry interactions without explicitly assigning a sub-grid model to account for the interactions. Because LES and detailed chemistry can be computationally expensive, CONVERGE features several acceleration strategies to speed up your simulations.