It is true that the air on the "top" (suction side) is faster than on the "bottom" (pressure side). The interesting thing is that the air on the suction side is so fast, it overtakes the air on the ...

You are describing a very interesting engineering problem. The requirement of a turbine is to convert fluid-energy into mechanical energy over a range conditions. Since the flow around the airfoils ...

As far as I understand your question you are looking for a way to diffuse/mix two gases into each other. The process is very hard to simulate "correctly" because of the characteristics of the ...

HVAC-Systems usually give a Volume-Flow-Rate, hence $m^3/s$. If you need Mass-Flow-Rate ($kg/s$) you simply need to multiply with the density ($\rho$) of the fluid. The density can be calculated using ...

The answer to this question is complicated since the flow is fundamentally different. When supersonic flow hits a wedge it is abruptly turned by one oblique shock. After this all streamlines are ...

The topic is – as easily seen from length and number of answers – not easy. This also means it does highly depend on every specific case to answer this topic. Part I: If we define that the process-...

In order to get the air through the pipe, the pressure rise of the first fan has to be so high, that the pressure-loss within the tube is compensated. Since your first fan (F1) is not powerful enough ...

hm... I presume the term does not compress is what kicked of this question. Right? The task of a pump is to store energy in the fluid (potential energy in the form of pressure). This stored energy ...

I am afraid the question you are asking might not even be a valid question. This is because of the correlation between the Reynolds-Number ($Re$) and the occurrence of turbulence. $Re$ is not a fluid ...

One possibility would be to use the air to drive a turbine (probably a radial turbine as they are used in turbochargers). The turbine could be connected to a generator and the generator to a resistor. ...

Disclaimer: As you requested general guidelines here they are. After having a converged solution, you need to investigate it thoroughly and look for clues that the choice of the turbulence model ...

The words unsteady and periodic have different meaning depending on the context they are used in. My answer is mainly with regards to axial or radial turbomachines. Lets say our machine is running at ...

I would guess that there is more than one reason to that (However, I am speculating, since I could not find any technical research on it). But in general the question is what effects can lead to a ...

I agree with @sturgman one should not look at individual parts but try to understand it in ints context. Looking at the very basic version of the Navier-Stokes-Equation (using Einstein-Notation): \...

That is a really nice thought experiment! In general I would argue that you only need to know: Total-Pressure ( $p_t$ of your supply) Static/Ambient Pressure ( $p_\infty$into which you are expanding) ...

This question is a theoretical/academic edge-case. A body in the water will experience two forces: Pressure acting on all surfaces in contact with water Gravity acting on the mass of the body The ...

An adiabatic and reversible process (i.e. isentropic) for ideal gases can be described as follows1: $p \cdot V^\gamma = \mathrm{const.}$ Here $\gamma$ is the heat capacity ratio. Other processes ...

Without any further information on where you want to apply "Bernoulli" it is hard to answer the question. But in general the static pressure $p$ does not include $\rho g z$. Lets recall again ...

There are two ways of "wall treatment" both feature two layers but at different $y^+$. The general idea is that the velocity gradients in the boundary layer are so high that one would need a very high ...

Averaging is a tricky business (see Cumsty 2006 for an introduction). Basically the problem is, that our thermodynamics usually talk about a pressure and a temperature etc. But in real life the ...

In general every compressor (axial and radial) will deliver a certain flow rate depending on the back-pressure down stream of the compressor. So by changing the pressure difference over the compressor:...

The basic assumption of the RANS approach (see the answer by @Algo) is that there is an overall steady solution to the problem. This overall steady solution features small scale oscillations around ...

There are multiple effects how net-frequency impacts the GT-efficiency. But it also depends on the GT-architecture. The following effects also impact the efficiency even if the 50 and 60Hz version ...

It is not entirely clear from the question, where the instrument readings take place. The following equations might need to be adapted in order to reflect the sensor positions. The basic equation for ...

TD;DR: No Compressibility is a characteristic of the fluid (or maybe also the way you describe a problem). $\frac{\partial \rho}{\partial p} \neq 0$ This means the a pressure variation will also ...

Assuming incompressibility you can work with volume-flow to calculate (a first guess) the velocity, $u$ with the following equations. Probably you have some volume or mass $\dot{m}$ flow entring at (...

Nitpicky Answer: you can't. More Detailed Answer: While enthalpy is commonly treated as an absolute quantity it is a thermodynamic potential. This is why textbooks might show the definition as \1\: $... View answer 1 votes At the very basic level, this is how steam turbines or an organic rankin cycle in solar thermal power plants work. https://www.barber-nichols.com/sites/default/files/wysiwyg/images/... View answer 1 votes Sorry, I got this completely wrong! The equation is not the profile contour but the chamber-line. Since a symmetric airfoil does not produce any lift, this ($y_c\$) should be a straight line (which is ...