Fluid Dynamics

it is a simulation of real running turbine or compressor blades, since it is difficult to study a rotating and mooving machin, its better to fix the blade and let the air circulate, then study all the parameters... bilal el samad mechanical engineer

The gas helium is less dense than the nitrogen-oxygen mix of atmospheric air. So a balloon filled to the same pressure (or even higher) will have a lower density than the air around it, which will displace it (flow under it), forcing it upward. The balloon will rise until the combined weight of the helium and the balloon are the same average weight (density) as the surrounding air. Long before it reaches that altitude, a normal balloon will begin to expand and will usually pop (at an altitude of a few hundred to a few thousand feet).
Helium molecules are lighter than most air molecules in the atmosphere (mostly nitrogen and oxygen) therefore they are prone to rise while heavier molecules move downward.

Yes, pressure at a given point in a non-moving fluid is transmitted equally in all directions. This is known as Pascal's principle, where an increase in pressure at any point in a confined fluid is transmitted undiminished in all directions throughout the fluid.

That depends on what information is provided. If you don't have any information, you may actually need to measure the speed of the water; or you may want to measure the flow (for example, in liters per second), and the pipe diameter, and then calculate the speed from that.

That's simple arithmetics: 14 million gallons per day is 14 million gallons per 86400 seconds, so it's about 162 gallons per second.

162 gallons is about 21.66 cubic feet.

Divide that by the area of channel section of 500 square feet and you get about 0.043 feet/second.

In incompressible fluid density is same because velocity gradient is same on every layer of liquid at any cross section.

200-400

Evaporation or vaporization.

This is possible because gases have the physical property of elasticity, due to the fact that there are relatively large spaces between the molecules of gases.

It is determined through measurement and temperature.

Basically to reduce air friction on a body, the most general idea is to streamline the body. The same is done by the helmet. When one drives a bike , the person takes a position which streamlines the flow of air over the body(i.e, he bends, like in motoGPs). But the head is not so streamlined and it can obstruct the air flow and hence can add additional drag. The helmet is also designed in the same way(take a look at the design of helmet of cyclists), it is streamlined, so that now the air flows smoothly over the head portion, hence reducing the drag.

Aerial tumbling is a good example of applying the principles of projectile motion as the gymnast's body follows a parabolic path when airborne. The frequency of tumbling passes reflects the repetitive nature of launching, flying, and landing, with each sequence demonstrating the projectile principle in action. However, frequency in this context is more about the number of tumbling passes executed within a given time period rather than the specific application of the projectile principle.

Aerial tumbling is not the best example of projectile principle for distance because it involves a combination of acrobatic movements and vertical displacement. A better example would be a horizontal projectile motion like kicking a ball or throwing an object, where the only force acting on the object is gravity and it follows a curved path.

from the continuity equation

A1v1 = A2v2

according to the continuity equation as the area decreases the velocity of the flow of the liquid increases and hence maximum velocity can be obtained at its throat

The surface tension of the water and the fact that oil and water cannot wet each other.

Anything moving in air is acted on the by the air, including the snowflake. Air, a fluid, will interact in a dynamic way with anything around which it is moving. Air resistance is a factor with a snowflake, a rain drop or a hail stone. Aerodynamic principles apply. We investigate stuff like this, and fluid dynamics is the field of study.

* Cracks

* Scratches

* Peeling (if there is a coating on the lens)

A penstock is a pipe that carries water from the reservoir to the turbine in a hydroelectric power plant, while a pressure shaft is a vertical pipe that carries water under pressure from the penstock to the turbines. The penstock is typically horizontal and submerged in water, while the pressure shaft is vertical and carries water at high pressure.

It floats on water because it is less dense than the water.

The Euler turbine equation is a mathematical equation used in fluid dynamics to describe the flow of an ideal fluid in a turbine. It is derived from the principles of conservation of mass, momentum, and energy. The equation helps to analyze the performance and efficiency of turbines by relating the fluid velocity, pressure, and geometry of the turbine blades.

Water and ice are two different phases, or physical states, of the same material (liquid/solid). Each has its own set of physical properties. Three examples are: density, hardness, and molecular arrangement. Each can be converted to the other by adding or removing energy.

The bonds between the molecules in liquid are fewer than those between the molecules in the solid phase. The solid has a characteristic crystalline structure.

Buoyant air will rise until it reaches warmer air that is the same density as itself.