@article{(Open Science Index):https://publications.waset.org/pdf/5462, title = {Distortion of Flow Measurement and Cavitation Occurs Due to Orifice Inlet Velocity Profiles}, author = {Byung-Soo Shin and Nam-Seok Kim and Sang-Kyu Lee and O-Hyun Keum}, country = {}, institution = {}, abstract = {This analysis investigates the distortion of flow measurement and the increase of cavitation along orifice flowmeter. The analysis using the numerical method (CFD) validated the distortion of flow measurement through the inlet velocity profile considering the convergence and grid dependency. Realizable k-e model was selected and y+ was about 50 in this numerical analysis. This analysis also estimated the vulnerability of cavitation effect due to inlet velocity profile. The investigation concludes that inclined inlet velocity profile could vary the pressure which was measured at pressure tab near pipe wall and it led to distort the pressure values ranged from -3.8% to 5.3% near the orifice plate and to make the increase of cavitation. The investigation recommends that the fully developed inlet velocity flow is beneficial to accurate flow measurement in orifice flowmeter.}, journal = {International Journal of Mechanical and Mechatronics Engineering}, volume = {5}, number = {7}, year = {2011}, pages = {1198 - 1203}, ee = {https://publications.waset.org/pdf/5462}, url = {https://publications.waset.org/vol/55}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 55, 2011}, }