A Variable-Fidelity Modeling (VFM) method has been developed as an efficient and accurate aerodynamic data modeling strategy. In this approach, a set of CFD methods with varying degrees of fidelity and computational expense is exercised to reduce the number of expensive high-fidelity computations. Kriging-based bridge functions are constructed to match the lowand high fidelity CFD data. The met...

A method to efficiently generate a complete aerodynamic description for projectile flight dynamic modeling is described. At the core of the method is an unsteady, time accurate computational fluid dynamics simulation that is tightly coupled to a rigid body dynamics simulation. A set of n short time snippets of simulated projectile motion at m different Mach numbers is computed and employed as b...

electric vehicles (evs) have gained the attention of many authorities, automakers and researchers due to their considerable energy saving and emission reduction. one of the main issues that must be considered in design of a road vehicle is the calculation of aerodynamic forces. this issue also must be scrutinized in the design of evs. installation of rear spoiler is one of the solutions propose...

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This study focuses on the identification of aerodynamic coefficients through airdrop data based a known six-degree-of-freedom (6-DOF) model. Since precise modelling parafoil system is prerequisite for design guidance, navigation and control systems, accurate calculation vital. paper first presents rigid 6-DOF nonlinear model simplifies it by linearizing equations around equilibrium point, which...

Abstract The authors of the work numerically studied aerodynamic coefficients sail blade, during which patterns three-dimensional flow around airflow and pressure distribution field were obtained. triangular blade is used as power element wind turbines. modeling was based on Reynolds-averaged Navier–Stokes equations (RANS) using ANSYS FLUENT computer program. A pattern obtained, gives a physica...