Why are transient simulations not needed for cfd of an aerofoil?
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Transient simulations are not always necessary for CFD of an aerofoil due to the computational cost associated with unsteady flow processes. While unsteady simulations are crucial for capturing phenomena like vortex shedding and periodic oscillations, they can be expensive in terms of computational resources and time . To address this issue, efficient reduced-order modeling (ROM) approaches have been developed to speed up unsteady aerodynamic simulations, providing quick predictions of flow fields with good accuracy . Additionally, algorithms like the Time Spectral method utilize Fourier representations in time to directly solve for periodic states without resolving transients, significantly reducing computational costs compared to conventional time-accurate methods while maintaining spectral accuracy . Therefore, for certain analyses where steady-state results are sufficient, transient simulations may not be needed for CFD of an aerofoil.
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| Papers (4) | Insight |
|---|---|
03 Jan 2022 2 Citations | Transient simulations are costly; a Galerkin reduced-order modeling (ROM) approach efficiently predicts unsteady aerodynamics for airfoils, offering significant speed-ups while maintaining accuracy compared to full CFD simulations. |
| Transient simulations are unnecessary for aerofoil CFD due to the Time Spectral method's Fourier representation, enabling direct periodic state solution without resolving transients, reducing computational costs significantly. | |
01 Jan 2019 | Transient simulations are essential for capturing highly dynamic aerodynamic effects in biomimetic micro-air vehicles, as demonstrated in the study on three-dimensional flight simulation with moving-aerofoil models. |
16 Feb 2021 1 Citations | Steady-state simulations are sufficient for CFD of an aerofoil as they capture the aerodynamic performance accurately under varying conditions like Mach numbers and angles of attack. |
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