Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
General

General

  1. All Categories
  2. Structures - General
  3. When using Explicit Dynamics or Autodyn Component systems to simulate explosions, how to calculate the specific internal energy for the ambient air?

When using Explicit Dynamics or Autodyn Component systems to simulate explosions, how to calculate the specific internal energy for the ambient air?

Tagged: 17, autodyn, explicit-dynamics, General, structural-mechanics
    • January 25, 2023 at 7:34 am
      FAQFAQ
      Participant

      The following formula can be used to get the correct specific internal energy of ambient air. E=P/(rho*(GAMA-1)), where P is air ambient pressure, GAMA is the ideal gas constant (usually 1.4), rho is the air ambient density. When the system units is mm/mg/ms, the specific internal energy of ambient air is 2.068E5 J/Kg.

Featured Articles

Introducing Ansys Electronics Desktop on Ansys Cloud

The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...

How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)

This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...

Introducing the GEKO Turbulence Model in Ansys Fluent

The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...

Postprocessing on Ansys EnSight

This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.

© 2026 Copyright ANSYS, Inc. All rights reserved.