Experimental investigation on pressure drop of a laboratory‐scale random packing column under roll and heave motion

2018 ◽  
Vol 97 (5) ◽  
pp. 1172-1180 ◽  
Author(s):  
Yi Huang ◽  
Xiaoning Di ◽  
Jun Ma ◽  
Shujie Chen ◽  
Wenhua Wang
Keyword(s):  
Experimental Investigation ◽  
Pressure Drop ◽  
Random Packing ◽  
Laboratory Scale ◽  
Heave Motion ◽  
Packing Column

A study of liquid spreading in laboratory scale random packing column with an optical method supplemented with liquid holdup characteristics

2018 ◽  
Vol 96 ◽  
pp. 162-168 ◽  
Author(s):  
Paweł Niegodajew ◽  
Michał Wilczyński ◽  
Maciej Marek ◽  
Stanisław Drobniak ◽  
Dariusz Asendrych ◽  
...  
Keyword(s):  
Optical Method ◽  
Random Packing ◽  
Laboratory Scale ◽  
Liquid Holdup ◽  
Liquid Spreading ◽  
Packing Column

Experimental Investigation of Effect of Tip Coolant Ejection on Internal Flow Characteristics Within a Realistic Blade Coolant Channel

2013 ◽  
Author(s):  
Jian Pu ◽  
Zhaoqing Ke ◽  
Jianhua Wang ◽  
Lei Wang ◽  
Hongde You
Keyword(s):  
Experimental Investigation ◽  
Reynolds Number ◽  
Pressure Drop ◽  
Turbine Blade ◽  
Flow Rate ◽  
Flow Characteristics ◽  
Reynolds Numbers ◽  
Flow Ratio ◽  
Lp Turbine ◽  
Mass Flow Ratio

This paper presents an experimental investigation on the characteristics of the fluid flow within an entire coolant channel of a low pressure (LP) turbine blade. The serpentine channel, which keeps realistic blade geometry, consists of three passes connected by a 180° sharp bend and a semi-round bend, 2 tip exits and 25 trailing edge exits. The mean velocity fields within several typical cross sections were captured using a particle image velocimetry (PIV) system. Pressure and flow rate at each exit were determined through the measurements of local static pressure and volume flow rate. To optimize the design of LP turbine blade coolant channels, the effect of tip ejection ratio (ER) from 180° sharp bend on the flow characteristics in the coolant channel were experimentally investigated at a series of inlet Reynolds numbers from 25,000 to 50,000. A complex flow pattern, which is different from the previous investigations conducted by a simplified square or rectangular two-pass U-channel, is exhibited from the PIV results. This experimental investigation indicated that: a) in the main flow direction, the regions of separation bubble and flow impingement increase in size with a decrease of the ER; b) the shape, intensity and position of the secondary vortices are changed by the ER; c) the mass flow ratio of each exit to inlet is not sensitive to the inlet Reynolds number; d) the increase of the ER reduces the mass flow ratio through each trailing edge exit to the extent of about 23–28% of the ER = 0 reference under the condition that the tip exit located at 180° bend is full open; e) the pressure drop through the entire coolant channel decreases with an increase in the ER and inlet Reynolds number, and a reduction about 35–40% of the non-dimensional pressure drop is observed at different inlet Reynolds numbers, under the condition that the tip exit located at 180° bend is full open.

Sign in / Sign up

Export Citation Format

Share Document