VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University561610.18287/2541-7533-2017-16-4-72-81UnclassifiedFlow conditioning downstream a pressure collectorKalaevV. A.<p><span lang="EN-US">Doctor of Science (Engineering)<br />Deputy General Director – Project Manager</span></p>general@ckti.ruKhorobrovS. V.<p><span lang="EN-US">CFD engineer, Department of Advanced Development</span></p>svyatoslav.khorobrov@gmail.comJoint-Stock Company “I.I. Polzunov Scientific and Development Association on Research and Design of Power Equipment”2212201716472812201201822012018Copyright © 2018, VESTNIK of Samara University. Aerospace and Mechanical Engineering2018<p>In this paper, incompressible turbulent flow downstream a symmetric pressure collector with fixed outlet pipe length is studied. The goal is to obtain smooth axial velocity profile at the outlet plane. Finite-volume RANS equations with a SST turbulence model are used to describe the motion of fluid. The solution is carried out with the ANSYS FLUENT solver. The transitional part in the T-junction pipe is redesigned to straighten the flow, series of conical confusers and plate grids are employed to reduce both the size of the recirculation area and the magnitude of rotational velocity. The final geometry is tested under asymmetric inlet boundary conditions and its efficiency is shown. CFD results are compared to literature data in terms of pressure drop.</p>Напорный коллекторпластиныспрямление профиля скоростивычислительная гидродинамикаFlow conditioningpressure collectorRANSANSYS FLUENTplate grid[1. GOST 8.586.2–2005. Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. Part 2: Orifice plates. Moscow: Standartinform Publ., 2007. 40 p. (In Russ.)][2. Quazzane A.K., Benhadj R. Flow Conditioners Design and Their Effects in Reducing Flow Metering Errors. Sensor Review. 2002. V. 22, Iss. 3. P. 223-231. DOI: <a href='http://doi.org/10.1108/02602280210433061'>10.1108/02602280210433061</a>][3. Zanker K.J. The Development of a Flow Straightener for Use with Orifice-Plate Flowmeters in Disturbed Flow. Flow Measurement in Closed Conduits (Proceedings of symposium at National Engineering Laboratory). 1962. P. 395-415.][4. Sawchuk B.D., Sawchuk D.P., Sawchuk D.A. Flow Conditioning and Effects on Accuracy for Fluid Flow Measurement. American School of Gas Measurement Technology. 2010.][5. Aleksandrov I.B., Kurkin E.I., Lukyanov O.E., Sadykova V.O., Shakhov V.G. Computational Simulation of the Flow Formation in the Circular Pipe after the Honeycomb. Izvestiya Samarskogo nauchnogo tsentra RAN. 2016. V. 18, no. 4. P. 115-119. (In Russ.)][6. Menter F.R. Best practice: scale-resolving simulations in ANSYS CFD. ANSYS Germany GmbH., 2012. 70 p.][7. El Drainy Y.A., Saqr K.M., Aly H.S., Jaafar M.N.M. CFD Analysis of Incompressible Turbulent Swirling Flow through Zanker Plate. Engineering Applications of Computational Fluid Mechanics. 2009. V. 3, Iss. 4. P. 562-572. DOI: <a href='http://doi.org/10.1080/19942060.2009.11015291'>10.1080/19942060.2009.11015291</a>][8. Idel'chik I.E. Spravochnik po gidravlicheskim soprotivleniyam [Reference book on hydraulic resistances]. Moscow: Mashinostroenie Publ., 1975. 559 p.]