Karteikarten
Fluids (5, 6)
Karten in diesem Stapel (19)
- 1When to use potential flowIn cases of inviscid (zero viscocity), incompressible flow
- 2What is true of potential flowAlso irrotational curl of velocity = 0
- 3Relationship between resistance and flow rateResistance to flow is proportional to the flow rate of the conserved quantity
- 4Where is potential flow appropritateHeat flow
Electric current
Porous flow
Diffusion is good example
Random motion leads potential flow - 5k Porous flow velocityThe permeability
Porous flow equation more complicated for multi phase flow
- 6Why potential flow appropriate when random motionBecause particle leaving a volume is proportional to the number of particles in a volume
- 7Vorticity0 for potential flow
- 8Navier Stokes with meaning
- 9How to get the vorticity equationTake the curl of navier stokes
- 10Pressure term Body force term Viscous termPressure disappears because taking the curl of a gradient of a scalar. And for incompressible flow density is constant
Disappears for constant body force in viscosity equation
Disappears if inviscid - 11steady stated/dt = 0
- 12Potential flow
- 13Laplaces equationIts linear so the solution to the overall problem can be the sum of the solutions at the boundaries
- 14Stream functionsUsed to represent 2d steady state systems that exhibit continuity
They are scalar fields where the flow follows constant values for the contours
ie a value for the flow is a streamline - 15Difference between value of streamline functionsIs equal to the flowrate difference between the streamlines
- 16Relationship between potential flow and streamlinesLines of constant value of the stream function is orthogonal to lines of contant value for the potential
- 17Stream function definitionWhere F is velocity
Flux is the volumetric flow rate through an area
- 18Steady state continuity
- 19Constant pressure drop implication
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- Contitnuum Mechanics Karteikarten am Fluids (5, 6), erstellt von Oliver Boom am 05/01/2019.
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- Oliver Boom
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