Essays about: "Unsteady flows"
Showing result 6 - 10 of 13 essays containing the words Unsteady flows.
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6. CFD simulation of dip-lubricated single-stage gearboxes through coupling of multiphase flow and multiple body dynamics : an initial investigation
University essay from Linköpings universitet/Mekanisk värmeteori och strömningsläraAbstract : Transmissions are an essential part of a vehicle powertrain. An optimally designed powertrain can result in energy savings, reduced environmental impact and increased comfort and reliability. Along with other components of the powertrain, efficiency is also a major concern in the design of transmissions. READ MORE
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7. ON SIMULATING COMPRESSIBLE FLOWS WITH A DENSITY BASED SOLVER
University essay from KTH/MekanikAbstract : A coupled density based solver in the framework of foam-extend is used to perform simulations of transonic flows. The solver is based on an explicit and time-accurate algorithm and is coupled to a compressible Unsteady Reynolds-Averaged Navier-Stokes (URANS) and a Large Eddy Simulation (LES) module. READ MORE
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8. Vortex Shedding And Aerodynamic Drag On Truncated Trailing Edge Airfoil
University essay from KTH/FlygdynamikAbstract : The thesis work content is to evaluate the use of more advanced turbulence models available in the ANSYS CFX software for aerodynamic calculations. In particular for flows over airfoils with thick trailing edges, the turbulence modeling is challenging to traditional methods, as both thin boundary layers as well as an unsteady wake needs to be well represented. READ MORE
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9. Accuracy of transient versus steady state forces on a rudder operating in a propeller slipstream
University essay from Umeå universitet/Institutionen för fysikAbstract : In computational fluid dynamics (CFD), a transient simulation is in general more costly than computing the steady state of the system, if such a state exists. The velocity field produced by the propeller blades upstream of a rudder is transient in nature, and rudder design using CFD may therefore become very time-consuming. READ MORE
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10. Effects of Asymmetry and Other Non-Standard Excitations on Structural Dynamic Forced Response Analysis of Turbomachinery Flow-Path Components
University essay from KTH/Kraft- och värmeteknologiAbstract : A recent paper explored a potential deficiency in the single frequency harmonic response structural dynamic analysis approach typically used to assess a resonant condition in turbomachinery flow path components. This deficiency is prevalent in supersonic flow conditions when non-adjacent stages are present. READ MORE