Fluid Mechanics
5:15 PM
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Oblique Shock
The discontinuities in supersonic flows do not always exist as normal to the flow direction. There are oblique shoc…
5:15 PM
Showing posts from June 21, 2013
Fluid Mechanics
5:14 PM
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Calculation of Flow Properties Across a Normal Shock
The easiest way to analyze a normal shock is to consider a control surface around the wave as shown in Fig. 41.2. T…
5:14 PM
Fluid Mechanics
5:12 PM
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The Physical Picture of the Flow through a Normal Shock
It is possible to obtain physical picture of the flow through a normal shock by employing some of the ideas of Fanno…
5:12 PM
Fluid Mechanics
5:10 PM
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Rayleigh Line Flows
Consider the effects of heat transfer on a frictionless compressible flow through a duct, the governing Eq. (41.1),…
5:10 PM
Fluid Mechanics
2:08 PM
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Fanno Line Flows
If we consider a problem of frictional adiabatic flow through a duct, the governing Eqs (41.1), (41.3), (38.8), (41.…
2:08 PM
Fluid Mechanics
2:06 PM
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Normal Shocks
Shock waves are highly localized irreversibilities in the flow . Within the distance of a mean free path, the fl…
2:06 PM
Fluid Mechanics
2:05 PM
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Isentropic Flow in a Converging-Diverging Nozzle
Consider the flow in a convergent-divergent nozzle (Fig. 40.9). The upstream stagnation conditions are assumed con…
2:05 PM
Fluid Mechanics
2:04 PM
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Pressure Distribution and Choking in a Converging Nozzle
Consider a convergent nozzle as shown in Fig. 40.7(a). Figure 40.7(b) shows the pressure ratio p/ p 0 along the len…
2:04 PM
Fluid Mechanics
2:03 PM
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Convergent - Divergent Nozzle
Suppose a nozzle is used to obtain a supersonic stream starting from low speeds at the inlet (Fig. 40.3). Then the M…
2:03 PM
Fluid Mechanics
2:03 PM
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Isentropic Flow in a Converging Nozzle
Consider the mass flow rate of an ideal gas through a converging nozzle. If the flow is isentropic, we can write …
2:03 PM
Fluid Mechanics
2:02 PM
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Effect of Area Variation on Flow Properties in Isentropic Flow
In considering the effect of area variation on flow properties in isentropic flow, we shall determine the effect o…
2:02 PM
Fluid Mechanics
2:01 PM
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Stagnation and Sonic Properties
Stagnation and Sonic Properties The stagnation properties at a point are defined as those which are to be obtained …
2:01 PM
Fluid Mechanics
2:00 PM
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Bernoulli and Euler Equations
For inviscid flows, the steady form of the momentum equation is the Euler equation, (39.11) Integrating alo…
2:00 PM
Fluid Mechanics
1:59 PM
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Continuity Equation and Energy Equation
For steady one-dimensional flow, the equation of continuity is Differentiating(after taking log), we get …
1:59 PM
Fluid Mechanics
1:58 PM
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Basic Equations for One-Dimensional Flow
Here we will study a class of compressible flows that can be treated as one dimensional flow. Such a simplification …
1:58 PM
Fluid Mechanics
1:57 PM
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Pressure Field Due to a Moving Source
Consider a point source emanating infinitesimal pressure disturbances in a still fluid, in which the speed of sound …
1:57 PM
Fluid Mechanics
1:56 PM
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Speed of Sound
The so-called sound speed is the rate of propogation of a pressure pulse of infinitesimal strength through a st…
1:56 PM
Fluid Mechanics
1:40 PM
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Isentropic
An isentropic process is a reversible-adiabatic process. For an adiabatic process =0, and for a reversible proce…
1:40 PM
Fluid Mechanics
1:39 PM
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Entropy and Second Law of Thermodynamics
Equation (38.24) does not tell us about the direction (i.e., a hot body with respect to its surrounding will gain te…
1:39 PM
Fluid Mechanics
1:39 PM
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First Law of Thermodynamics
Let us imagine a control-mass system with a fixed mass of gas. If amount of heat is added to the system across t…
1:39 PM
Fluid Mechanics
1:38 PM
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Internal Energy and Enthalpy
Microscopic view of a gas is a collection of particles in random motion. Energy of a particle consists of trans…
1:38 PM
Fluid Mechanics
1:37 PM
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Perfect Gas
A perfect gas is one in which intermolecular forces are neglected . The equation of state for a perfect gas can…
1:37 PM
