AN EXPERIMENTAL INVESTIGATION OF PRESSURE AND CAVITATION CHARACTERISTICS OF HIGH VELOCITY FLOW OVER A CYLINDRICAL PROTRUSION IN THE PRESENCE AND ABSENCE OF AERATION

作者：Dong Zhi yong^*; Liu Zhi ping; Wu Yi hong; Zhang Dong

来源：Journal of Hydrodynamics, 2008, 20(1): 60-66.

DOI：10.1016/S1001-6058(08)60028-1

• cylindrical protrusion
• aeration
• pressure
• cavitation number
• high velocity flow

This article experimentally investigated the pressure and cavitation characteristics of high velocity flow over a surface irregularity with and without aeration in a non-circulating water tunnel system. The surface irregularity is a cylindrical protrusion made of stainless steel of 6 mm diameter and 2 mm height. Pressures with and without aeration were measured with MPX400D pressure transducers and real-timely acquired by a SINOCERA YE6263 data acquisition system. Variations in flow regimes with and without aeration were observed. Pressure profiles and their variations with air concentration upper and lower cylindrical protrusion on the invert and obvert walls were determined. Variations of cavitation number with air concentration lower cylindrical protrusion were analyzed. Also, cavitation numbers in the presence and absence of aeration were compared.

• 出版日期2008-2
• 单位浙江工业大学; 中国水利水电科学研究院