0
The pressure flow theory describes the movement of food through the phloem. The theory was originated by Ernst Munch.
What else can I help you with?
What is mean by cold chamber die casting machine?
cold chamber die casting machine can be divided into the direction of the direction of the flow of fluid in the hydraulic system used to control or regulate the pressure and flow valves, pressure valves and flow control valve three categories. A same shape as the valve, because of the different mechanisms of action have different functions. Pressure valve and flow valve with a throttle effect of the flow passage cross section to control the system pressure and flow direction valve replacement of the flow passage control the oil flow direction.
How is supersonic flow produced in a de laval nozzle?
Supersonic flow is produced in a de laval nozzle by constricting the flow in the center in order to increase the velocity. The shape will be hour-glass in nature. The initial mass flow rate and inlet pressure must be sufficient to produce a supersonic choked flow and the discharge pressure must be sufficiently low enough for supersonic flow to occur.
What is critical pressure in nozzle?
Critical pressure in a nozzle is the pressure at which the flow of material through the nozzle reaches its maximum. Beyond which any increase in pressure will not result in an increase in flow. The point at which the velocity of a fluid in the throat of the nozzle reaches the local speed of sound, creating a sonic wave, or a sonic choke.
What is the function of the impeller in a centrifugal pump?
Impeller make the flow has velocity in a centrifugal pump. The purpose of pump is increasing the pressure. The flow has velocity envergy via impeller and the energy change to pressure energy in diffuser.
What is the difference between normal flowrate and Actual flow rate?
Normal flow is 100% of the flow you actually expect. Rated flow is the maximum safety factor times the normal flow. i.e. for a maximum safety factor of 1.2 Normal flow = 100 gpm Rated flow = 1.2*100 gpm = 120 gpm Safety factors are applied to ensure a piece of equipment has some flexibility of operating conditions in its application. The minimum flow is the minimum safety factor time the normal flow i.e. i.e. for a maximum safety factor of 0.5 Normal flow = 100 gpm Rated flow = 0.5*100 gpm = 50 gpm If sized properly a pump specified in this way could operate at any point between 50 and 120gpm with no problems.
What happens to flow when pressure is increased?
Pressure decreases.
What is the formula for converting flow to pressure in a hydraulic system?
The formula for converting flow to pressure in a hydraulic system is: Pressure Flow x Resistance.
What is the relationship between pressure and flow rate in a system, as described by the pressure vs flow rate equation?
In a system, the relationship between pressure and flow rate is described by the pressure vs flow rate equation. This equation shows that as pressure increases, flow rate decreases, and vice versa. This means that there is an inverse relationship between pressure and flow rate in a system.
What role does pressure play in the flow of fluid?
Pressure plays a crucial role in the flow of fluid by determining the direction and speed of the flow. Fluids flow from high-pressure areas to low-pressure areas, creating a pressure difference that drives the movement. The relationship between pressure and flow rate is described by principles like Bernoulli's equation.
What is the pressure at the stagnation point of a fluid flow?
The pressure at the stagnation point of a fluid flow is the highest point of pressure in the flow, where the fluid comes to a stop and its kinetic energy is converted to pressure energy.
Does pump create pressure?
No. Pumps create flow. Resistance to flow creates pressure.
What is the impact on flow and pressure when the impeller of a pump is trimmed?
Both pressure and flow decreases
How can I convert flow to pressure in a fluid system?
To convert flow to pressure in a fluid system, you can use the Bernoulli's equation, which relates the flow rate, pressure, and velocity of the fluid. By manipulating this equation, you can calculate the pressure based on the flow rate in the system.
How does pressure change with variations in flow rate?
Pressure changes with variations in flow rate in a direct relationship. As flow rate increases, pressure decreases, and as flow rate decreases, pressure increases. This is known as the Bernoulli principle, which states that as fluid velocity increases, its pressure decreases.
In which direction will air flow?
Air will flow from areas of high pressure to areas of low pressure.
What is the relationship between the stagnation pressure ratio across a normal shock and the resulting flow stagnation pressure?
The stagnation pressure ratio across a normal shock is directly related to the resulting flow stagnation pressure. As the stagnation pressure ratio increases, the flow stagnation pressure also increases. This relationship helps to understand how shocks affect the pressure in a flow.
How can I convert flow rate to pressure in a fluid system?
To convert flow rate to pressure in a fluid system, you can use the Bernoulli's equation, which relates the flow rate, pressure, and velocity of the fluid. By rearranging the equation and solving for pressure, you can calculate the pressure based on the given flow rate and other relevant parameters of the system.
