Stallion 3D with HIST

UAV Aerodynamics

Stallion 3D is an aerodynamics software package that solves the full 3D compressible Navier-Stokes or Euler equations on a Microsoft Windows laptop or desktop computer. The software solves your 3D aerodynamics problems within your workday. We call this SameDayCFD. Stallion 3D analyzes your actual geometry. A Consistent Automatic Grid generation approach removes the ambiguity inherent in other methods. Results from Stallion 3D match experiments. Engineers use Stallion 3D to design and test aircraft, UAVs, vehicles in ground effect, sails and sailboats, buildings and other objects. Stallion 3D is powered by your personal computer and there are no additional software or fees needed to obtain your results.

SameDayCFD Anaysis with Stallion 3D

Actual Geometry Analysis

Actual Geometry Analysis (AGA) eliminates the time spent to defeature your design. Stallion 3D analyzes your actual design even with small features such as nuts, bolts and logos.

Consistent Grid Generation

Every grid generated by Stallion 3D is consistent and provide accurate results for small parameter changes. The HIST (Hanley Innovations Surface Treatment) finds your geometry and uses the most accurate and efficient algorithms and boundary solution in CFD.

Flow Physics

Stallion 3D solves the complete 3D compressible Euler equations, the laminar Navier-Stokes equations or the Reynolds Averaged Navier-Stokes (RANS) equations to generate accurate aerodynamics parameters for your designs.

The Stallion 3D Work Flow: Setup in Seconds

Import the geometry

Set the flow conditions

Setup the CFD

Generate Grid/Solve Flow

Integrated Tools and Solutions

3-D .STL File Import

3-D Wing Geometry Creation Tool (30 wings)

3-D Body of Revolution Creation Tool

Airfoil Analysis Tool

Built-in Post Processing

3D Compressible Euler Solver

3D Compressible Navier-Stokes Solver

3D Compressible RANS/k-epsilon Solver

Automatic Grid Generation

Quasi-steady Boundary Conditions

Validation with Experiments

Ahmed Body Experiment

The compressible Euler solver (for low speed flows) was used to analyze the Ahmed body geometry for validation of solutions for road vehicles and race cars (F1 for example). Read Article.

Onera M6 Wing

Stallion 3D receives excellent results for the inviscid analysis of the Onera M6 wing. The article shows comparisons made with experiments for two grid settings. Read Article.

Bell X1 Analysis

CFD Software Bell X1

Analysis of the Bell X1 Aircraft using Stallion 3D. The number of cells is 400,000+. The angle of attack is 1 degree and the speed is 420 meters per second. The problem was solved from CAD to final results in 3 hours on a 2 GHz laptop.

MIG 15 Analysis

CFD Software MIG 15

Analysis of a MIG 15 using Stallion 3D RANS solver. The number of cells is 700,000+. The angle of attack is 15 degrees and the speed is 100 meters per second. The problem was solved from CAD to final results in 8 hours on a 2 GHz laptop. The CAD file was obtained from NASA's OpenVSP.

Cessna 210 Analysis and Validation

CFD Software MIG 15 CFD Software MIG 15 CFD Software MIG 15

Analysis of a Cessna 210 using Stallion 3D Euler solver. The number of cells is 700,000+. The full range of angles of attack was performed within 24 hours on a laptop computer using multiple instances. The STL for this study was obtained from NASA's OpenVSP.

Formula 1 (F1) Car Analysis

F1 Car CFD Analysis

This F1 model was analyzed in ground effect using Stallion 3D. 1.7 million cells were used in the simulation on a 2 GHz laptop PC. Stallion 3D used used it RANS/k-epsilon solver with a wall function boundary condition.

The DrivAer Experimental Model

DrivAer Model CFD Analysis

The DrivAer experiment is a validation exercise for CFD solutions of passenger cars. The picture shows the flow velocity near the surface of the DrivAer model with mirrors and detailed underbody. The problem was analyzed in Stallion 3D using 1.7 million cell and the RANS/k-epsilon solver. The solution was unsteady with an average drag coefficient of about 0.29.

HL-20 Analysis

HL-20 CFD Analysis

The results from Stallion 3D RANS solver (CL = 0.41, CD = 0.25 & CM = -0.0387 ) were compared to the findings of NASA Technical Memorandum 4117,Transonic Aerodynamic Characteristics of a Proposed Assured Crew Return Capability (ACRC) Lifting-Body Configuration by George M. Ware. From the graphs, the corresponding experimental results were (CL = 0.48, CD = 0.24 & CM = -0.042). The geometry was obtained from NASA OpenVSP. The flow parameters for this case are M = 1.2 with an angle of attack of 12 degrees. This simulation used about 480,000 cells and ran for 3 hours on a 2 GHz laptop computer.

Stallion 3D News

Stallion 3D was featured in the July Issue of Desktop Engineering. Read more.

NASA used Stallion 3D for stability of CubeSats during planetary entry. Download PDF report.

Stallion 3D Subscription

Stallion 3D requires a PC, Laptop or tablet running the 64bit versions of MS Windows 7, 8 or 10. A 4 core PC with a clock speed of at least 2 GHz is recommended.

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