Question

A standard oriice with diameter 25 mm is installed in a horizontal pipe having an inside diameter of 50 mm The pipe is to handle the steady flow of water at 20 °C. The average velocity of months of operation. It is desired to measure the pressure drop across the orifice taps by means of a simple vertical manometer. It is anticipated that the reading on the manometer scale can be obtained with a precision of 2.0 mm It is agreed that this reading error must not produce an error amounting to more than 1.0 % ofthe total scale reading in any case. Specify the appropriate fluid (among the fluids A, B, and C with specific gravities 1.59, 3.70. and 13.6. respectively) to be used in the manometer and the necessary length of the manometer scale. 2. the water in the pipe is expected to range from 1.2 to 3.0 m/s over the projected

Fluid dynamics: please help!!

Answer 1

Please refer the following images for the solution.

Soluhim L3 46 ft- 12-192 m 2.2 so c 1.061882 3s a) Diametes the second & thiad section f the main thid sechom duct (D2 &Ds locihes n alt sech'on ane same 1-06 1582 6.468o m/s 6. 4680 Tn o. 70792 6. 4680 .4x0 707921 TY 6.4680. 139 35s o. 3539 61 6.1168 0 Also, As: o. 353961 6. 4680 2

0.0019834-0.0043087 04924 hz 002 hu Fluid 1, sa-9 1.59) Fluid 2, SG 3.70 3170-1 Fluid 3 S G6 1-10032. 거 13.6 으-」

man 2 7 o O χ<\/86S3m \ manamehic )endine) fr plu dy. Flud 2, SG570 Fund6