White Papers

Exploring Hydrogen Tank Filling Dynamics

Published November 20, 2023
To design safe and reliable hydrogen storage infrastructure, engineers must account for hydrogen’s highly diffusive and corrosive nature and unique thermodynamic properties. This white paper discusses how to apply CONVERGE’s autonomous meshing, real gas properties, and robust turbulence and conjugate heat transfer models to investigate the hydrogen tank filling and emptying processes.

CONVERGE CFD for Pumps: Challenges and Solutions

Published June 27, 2022
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.

Paint Bake Oven: A Case Study on How CONVERGE Handles Complex Moving Geometries

Published December 8, 2021
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.

A Single Tool for Complex Geometries: Modeling the Fluid Dynamics of Positive-Displacement Compressors With CONVERGE

Published October 16, 2020
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.

Efficient and Accurate Modeling of Heat Transfer in an Engine Head and Block

Published October 23, 2018
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

Published August 6, 2018
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.

Resolving Turbulence-Chemistry Interactions In Mixing-Controlled Combustion With LES And Detailed Chemistry

Published August 6, 2018
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.