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Home > Expertise fields > Software products > Start

START™ Unsteady Aerodynamics Software

Presentation

START™ Software

• A Simple Tool for Aerodynamic Transients
• A specific pre-design tool for the estimation of unsteady aerodynamic effects on trains and structures

START™ is developed and support by PRINCIPIA

 

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Applications

• Moving vehicules : trains, cars, trucks,submarins...
• Blowing effects on structures
• Crosswind shift effects
• Wake effects

START in Brief (643.2K)

 

 

 

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Theory and numerical methods

• Perfect fluid with boundary layer corrections
• Compressible or uncompressible fluid in linearized theory
• Panel method with sources and doublets
• Wake effects captured by vortex sheets in equilibrium
• Powerfull matrix solver (double conjugated gradients) and bandwidth control.

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Results

• Pressure fields, velocity fields
• Steady and unsteady loads
• Time histories of pressure, velocity, loads on all the structure or punctual

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References

SNCF direction du materiel, Geste Engineering, Dbag, Bombardier, Alstom…

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Hardware configuration

PC Windows or Linux

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