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Aerodynamics for Engineers - Research Paper Example

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In the study “Aerodynamics for Engineers,” the author is focusing on generating best practices and investigating different strategies of employing the commercially available shape optimizer tool from ANSYS CFD solver Fluent. The shape optimizer is based on a polynomial mesh- morphing algorithm…
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Aerodynamics for Engineers
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Download file to see previous pages There are different equations like Navier Equation, RANS equation and different meshing techniques like finite difference and finite volume that are used in CFD for fluid analysis. Other meshing schemes are also there like FEM and BEM but they are not used for fluid analysis (Anderson, 1995).
The flow behavior in terms of velocity field for a non-turbulent, Newtonian fluid is governed by the Navier-Stokes equations. These equations are valid only for the moving flow as it describes the flow field. The Navier-Stokes equations are obtained by combining the fluid kinematics and constitutive relation into the fluid equation of motion and eliminating some higher order tensors. Navier-stroke equation is applicable for any laminar or transient and nonviscous flow passing through the passage of any geometry. Computational Efficiency: There has to be a lessening in the computing time needed to attain suitably determined solutions. This is an imperative requirement in sleek aerodynamic and multi-purpose design customization, as a result of the drift focusing a concurrent product and process advanced manufacturing. For comprehensive incorporation into the design procedures, the time necessary for the solution of the RANS equations should be limited to only some minutes, over three-dimensional simulations, which is two orders of degree quicker than capacity, a fresh improvement at the beginning of this era. Even though there is a specific benefit of parallel architectures and augmented computer processing velocity, there is a requirement for enhancement in algorithms. In design customization as well, algorithm trustworthiness has a larger implication. An explicit narration of Zingg et al (2002) is articulated as “Modern design optimization an algorithm, such as adjoint methods cannot be effective if the flow solver does not converge in relevant areas of the design space”.
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