Fluid mechanics experience, how to learn fluid mechanics on your own

Which major did you study? Talk about the application of fluid mechanics in this specialty. If you are a water supply and drainage professional, the following professional applications can be used for reference, and you can choose the one you have the deepest experience.

Fluid mechanics is used to determine the size of the water treatment structure, such as volume, depth, and water residence time in the structure;

Fluid mechanics is also used in the pumping and conveying of water, the determination of pump flow and head, the inlet and outlet channels on water treatment structures, the import and export, and the distribution and collection of water volume;

The vortex of the fluid in the flocculation tank of water treatment and the hydraulic gradient of the water flow have a significant impact on the flocculation effect, which needs to be solved by the knowledge of fluid mechanics.

The residence time, sedimentation efficiency, and the influence and improvement of inlet and outlet water flow in the sedimentation tank of water treatment should also be hydrodynamics;

Fluid mechanics is also used in the uniform water distribution design of filtration, infiltration, reverse osmosis, and filter backwashing;

There are also many hydrodynamic problems with water cooling and cooling water treatment, water spraying, and ventilation;

Many of the measuring instruments in the water treatment plant are also made according to the principles of fluid mechanics;

You can also talk about the similarities and differences and characteristics of fluid mechanics and solid mechanics, such as comparing the difference between fluid deformation and solids, the difference between pressure transmission, and the similarities and differences between stress and strain. Pick the one you know the most.

Get a ballistic missile to turn in, this is the experience, you slowly experience.

Gorgeous beautiful flat push knock on the right hand.

I think there are a few main things about fluid mechanics. After learning, you have to remember that there are not many cracks, which means that you have learned well.

Hydrostatics or something.

1 The field equation is the foundation. the universal ns equation for incompressible fluids; Euler's differential equations for ideal fluids; continuity equation; Among them, multivariate function differential calculus and Taylor's formula are used. A few problems can be solved to obtain the pressure and velocity field distributions by solving the ns equation.

2. Bernoulli's equation for finding the main velocity and pressure; This is simple, and most people remember this after learning fluid mechanics.

3. The potential function method of the ideal fluid solves the velocity field and the pressure field; This is the knowledge of complex variable functions.

4. Boundary Layer Theory; This is to concentrate the main contradiction in the boundary layer, and the ns equation in the boundary layer can be simplified. It is possible to get an analytic solution. In our textbook, we actually use the integral form of the boundary layer momentum equation, according to which we can get the functional relationship between the thickness change of the boundary layer and the position.

According to this law, Newton's law of internal friction can be used to obtain the drag coefficient of the plate. What are the mathematical and qualitative conditions for boundary layer separation. These backs will do.

This part of the content was developed by von Kármán and Plante in order to find the lift of the aircraft.

5. Aerodynamics, that is, what scales the nozzle, reduces the pressure and velocity flow relationship of the nozzle. This part can actually be regarded as compressible fluid dynamics, but in fact, there is no field distribution, but only quantitative analysis. There is also the shock wave, the shock wave forms a parameter relationship before and after, and you can memorize it.

This part uses the energy equation, which is actually very simple, after all, it is only a qualitative analysis.

If you read fluid mechanics five or six times, you'll be able to get started. Because there are actually a lot of details in it, I said that those are just approximate, and some conclusions still need to be memorized and understood. So there are still a lot of general knowledge points.

In general, it's about learning.

Knowledge of the statics of fluids at rest or about the dynamics of motion, as well as knowledge of related engineering applications.

Specifically, the main basic knowledge is:

1) Characteristics of the fluid, such as viscosity, compressibility, etc.

2) The mechanical properties of the fluid when it is at rest, such as the differential pressure equation, the equilibrium differential equation, the calculation of pressure, etc.

3) The properties of motion and mechanics exhibited in fluid motion, such as streamline equation, trace equation, Bernoulli energy equation, n-s dynamics equation, momentum equation, momentum moment equation.

4) The law of the force of the fluid on the object when it is at rest and in motion and its application in engineering, such as the calculation of the force of the stationary fluid on the plane or surface or object, the calculation of the force (or moment) of the moving fluid on the plane or surface or the object, or the application in the industry, such as aircraft, trains, automobiles, etc.

5) Dimensional theory, such as the law of dimensional identity, laws, etc.

6) Others, such as computational fluid dynamics, etc.

First of all, the basic theory, such as the system of flow governing equations, is often very complex, and it is difficult to derive the laws of flow from it without obtaining analytical solutions. Then, for some relatively simple flows, such as ideal incompressible, rotationless geopotential flow, flat plate boundary layer, etc., the flow equation is simplified, and some analytical solutions and flow laws are obtained. Truly complex flows can be solved experimentally or numerically simulated; The theoretical basis of the experiment is mainly the similarity theory, and the numerical simulation is computational fluid dynamics.

This uses Bernoulli's equation, deltap=delta(pv 2 2)(

The flow rate v= is obtained

Multiply by the cross-sectional area to get the flow rate, which is.