Store release simulation using unsteady CFD algorithm with chimera grid and panel methods. | [Proceedings of 4th International Bhurban Conference on Applied Sciences and Technology • 2005]

Author(s):

1. Amer Farhan Rafique: Department of Aerospace Engineering, College of Aeronautical Engineering, NUST, Risalpur, Pakistan

2. Syed Tauqeer-Ul-Islam: Department of Aerospace Engineering, College of Aeronautical Engineering, NUST, Risalpur, Pakistan

3. Zakir Mahfooz: Department of Aerospace Engineering, College of Aeronautical Engineering, NUST, Risalpur, Pakistan

Abstract:

Release simulation of aircraft stores is an important area as it involves pilot as well as aircraft safety. The aerodynamic forces and moments which act on the store at the time of release may be sufficient to send the store back towards the aircraft. This may not only damage the aircraft but also endanger the crew. Release simulation studies are therefore performed to ensure safety of the drop. To obtain time accurate solutions Panel Methods have been used in the Past and present. Panel Methods have their limitations as they can predict aerodynamics accurately in linear regime only. Panel Methods have the advantage that reasonably accurate simulations can be performed with much lesser computation and time. With the exponential growth in computation speed, time accurate full Navier-Stokes simulations are increasingly been used to simulate this phenomenon with more accuracy. In this study the store release problem has been addressed using Euler Equation to reduce grid complexity and computation time. The CFD results have been compared with Panel results-to compare the difference between the trajectories of the store under similar set of conditions.

Page(s): 175-187

DOI: DOI not available

Published: Journal: Proceedings of 4th International Bhurban Conference on Applied Sciences and Technology, Volume: 0, Issue: , Year: 2005

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