The first experiment is to study the force of a plate impinged by an air jet. The second experiment is to study the formation of a round air jet by a nozzle, tested by a plate.
The force applied on the fluid with a certain length of time period has the result to change the momentum of the fluid. In other words, the force has the effect as the velocity change of the fluid at its mass flow rate.
The second experiment is to measure the effective area of a jet. In additional to the height of the plate is a variable, the radial distance is another one so that at large distance it will ultimately gives zero force.
The plate has a spring gauge so that the force on it can be measured. The plate can be placed above the nozzle and adjusted to different heights and redial distances. The pitot tube has a probe which connects the manometer. Fan gives air jet to the nozzle.
In experiments results are collected in trials which are compared with theoretical calculations.
This value is larger than the experiment observed, which is about 1.08, 1.06 kg.
For the second experiment heights from 0 to 80 cm with step size 10 cm are measured with each height has 8 trials in different distances from center to outskirt. The measured fluid levels in manometer give that for closer distance to the nozzle, the central pressure is larger than further distance to the nozzle (i.e. lower position vs. higher position). On the other hand the boundary of the nozzle is increased as the plate was moved to higher (further) position. In other words, to develop nozzle area it needs a certain distance as the basis.
Figure 2: The average diameter as a function of the plate height.
It was observed that the nozzle gives larger diameter of the boundary as the height of the plate increases. The force calculated in the theoretical work is larger than observed in the experiment.
Experience significant changes in the density of the fluid behavior are described compressible flow. Magnetic flux density can be simplified for analysis of flow behavior by assuming a constant density does not change significantly. This leads to the theory of idealized incompressible fluid. As a result, in most cases, significant changes in the density and gas, liquid handling (especially for high sales) because the flow of large pressure changes that can handle these cases, you can fix you must be obtained when analyzing the compressible flow.
The rest of the gas at supersonic speed in order to facilitate the convergence of the gas duct and the branch line for the first time subsonically accelerated by adding to the speed of the supersonic expansion is very important. Therefore, the outlet nozzle is designed to achieve supersonic flow conduit is convergentdivergent. Throat Mach number, can not exceed 1, the mass flow rate decreases, the output pressure of the nozzle becomes constant. This is the breath of the nozzle flow. Or equal to the formation of shocks, output does not exceed the design pressure or flow and shock wave deceleration nozzle pressure ratio that is designed to work are formed.
(A) supply pressure valve and back pressure valve is fully opened, is all.
(B) such that the pressure re-measured static pressure probe completely surprised.
Again, the pressure is the same procedure until the supply pressure. At each step, reading the water of the slope of the level of the pressure.
O (C) Sonic (design conditions) subsonic procedures in place at each step, reading the water level is the same as in Experiment 1, through exploration and reading the pressure at the nozzle through the nozzle gauge metric.
By adding a column to promote the cause of the fluid flowing through pipe sales in subsonic flow, it takes some time to add a column to a supersonic flow of a pipe flow. Zoning changes will make the flow of friction choking Mach number required to reach the column, similar to the above case will be added later.
For the ideal gas constant area of the pipe, the pipeline was held at Mach number of non-identical effects of changes in temperature is due to explain how you can use to calculate the Rayleigh flow model. Fixed temperature when the isentropic depression if it is delayed, in making liquid is the temperature. Increasing the temperature of the heat, such as congestion, added to the system.
And additional variables are available given the changes in the density analysis. Generally, conservation of mass conservation equation for incompressible flow can be resolved by considering, as opposed to. In general, includes the principle of conservation of energy. However, this is another variable (temperature), and the fourth equation, therefore, to describe the thermodynamic temperature of the flow that is required (e.g., ideal gas equation of state, etc.) has been introduced.
The identity politics of the density of the fluid density isentropic you, ρ0, the reference value, when you define a way to compress the stream can are stopped if that helps you compare the density. In principle, the static density is 5% or more relative to the change in density, must be analyzed and then compress the fluid flow. Ideal gas specific heat at a rate of 1.4 cases around the Mach number is greater than 0.3 occur. Below this value, however, in certain cases, may depend heavily compressed or the level of accuracy required, should be treated likely.