《流体力学》徐正坦主编课后谜底第二章(国外英文资料).doc

《流体力学》徐正坦主编课后答案第二章(国外英文资料) The second chapter is a short answer What is the relative pressure of A and B in the 2-1 diagram? (N/m2 and mH2O, respectively) Question 2-1 figure Solution: 2 minus 2, we know that z is 1 meter in the 2-2 graph, h equals 2m, and were trying to figure out the relative pressure of A. Solution: take the pressure surface 1-1 2-3 known water tank vacuum gauge M is 0.98 kPa, the liquid level of tank and tank is equal to 1.5 M, and the mercury is poor, how many meters is it? Solution: take the pressure surface 1-1 2-4 in order to accurately measure the differential pressure of A and B in the fluid of the density, the design diagram microvoltmeter. The difference in the surface of the liquid is shown here. Try to find the relationship and the differential pressure of A and B at the same height. Solution: the surface of the pressure surface is 1-1, which is based on 3-3 (the pressure on a segment of the air is negligible) Take the pressure surface 2 minus 2 2-5 this is an airtight container with A pressure gauge of 4900N/m2, the pressure gauge center is 0.4 m higher than A point, and A point is 1.5 m below the surface of the water. Solution: 2-6 the device that measures the differential pressure on the inclined pipe, known to be the difference between the differential pressure gauge, and the oil of (1). (2) for air; What is the differential pressure difference between A and B? Solution: (1) take the pressure surface 1-1 (2) the same problem (1) 2-7 the dip of the tilting micromanometer is known, the liquid surface of the container is measured to the height of the pressure tube and the pressure is applied. Solution: As shown in figure 2, the mercury level of the u-tube differential is high. I want the pressure difference in A, B, and B. Solution: take the pressure surface 1-1 The 2-9 sprinklers will be on the ground with constant acceleration, when the water vehicle is still, the position of B, the static water pressure at the point after the move