Essays about: "Compressible"

Showing result 16 - 20 of 43 essays containing the word Compressible.

1. 16. 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 strömningslära

   Author : Nasir Imtiaz; [2018]
   Keywords : transmissions; churning losses; CFD; STAR-CCM ; FZG gearbox; planetary gearbox; RBM; MRF; unsteady framework; VOF; immiscible; overset meshing technique;

   Abstract : 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

3. 17. Critical behaviour of directed percolation process in the presence of compressible velocity field

   University essay from Stockholms universitet/Fysikum; Stockholms universitet/Nordiska institutet för teoretisk fysik (Nordita)

   Author : Viktor Škultéty; [2017]
   Keywords : fully developed turbulence; directed percolation; field-theoretic renormalization group; anomalous scaling;

   Abstract : Renormalization group analysis is a useful tool for studying critical behaviour of stochastic systems. In this thesis, field-theoretic renormalization group will be applied to the scalar model representing directed percolation, known as Gribov model, in presence of the random velocity field. READ MORE

4. 18. Mixing ratio determination of binary solvent mixtures in high-pressure microfluidics

   University essay from Uppsala universitet/Mikrosystemteknik

   Author : Anton Wilson; [2017]
   Keywords : fluid; mixture; high-pressure; microfluidics;

   Abstract : The focus of this project is to find a suitable method to determine the mixing ratio inbinary fluid mixtures in continuous-flow microfluidic systems because of thedifficulties in doing so for mixtures containing compressible fluids. Refractive indexand relative static permittivity are both properties that could be suitable, but methodsmeasuring the refractive index scales badly for microsystems. READ MORE

5. 19. Compressible Flow Modeling with Combustion Engine Applications

   University essay from Linköpings universitet/Fordonssystem

   Author : Carl Vilhelmsson; [2017]
   Keywords : Compressible; Flow; Modeling; Combustion; Engine; Throttle; EGR; Wastegate; Valves; Gas;

   Abstract : The high demands on low fuel consumption and low emissions on the combustion engines of both today, and the future, is highly dependent on advanced control systems in order to fulfill these demands. The control systems and strategies are based on models which describe the physical system. READ MORE

6. 20. An Experimental Study of the High-Lift System and Wing-Body Junction Wake Flow Interference of the NASA Common Research Model

   University essay from KTH/Optimeringslära och systemteori

   Author : Desirée Brundin; [2017]
   Keywords : Common research model; wind tunnel experiments; subsonic flow; wing-body junction; commercial aircraft; Cobra Probe measurements; high-lift control systems; flow interference; drag estimate.;

   Abstract : This thesis investigates the turbulent flow in the wake of the wing-body junction of the NASA Common Research Model to further reveal its complex vortical structure and to contribute to the reference database used for Computational Fluid Dynamics validation activities. Compressible flows near two wall-boundary layers occurs not only at the wing-body junction but at every control surface of an airplane, therefore increased knowledge about this complex flow structure could potentially improve the estimates of drag performance and control surface efficiency, primarily for minimizing the environmental impact of commercial flight. READ MORE