... characteristics of the multi-element airfoil. A new control surface (OptimTAC) was constructed as a result of the design optimization calculation and was shown to have improved lift, drag, and torque characteristics over the original FlexTAC airfoil at high flap angles. 17 09 2009 19 02 2010 28 04...

... . The effects of varying the cone vertex angle and the gap width on the torque seen by the rotating cone are considered, as well as the effect of a forced throughflow. The performance of various turbulence models are considered, as well as the ability of common wall treatments/functions to capture the near-wall...

... successfully compared with the experimental data for the unsteady pressure fluctuations pattern in the volute shroud, a new step is proposed in order to correlate the observed effects with the flow structure inside the pump. In particular, the torque as a function of the relative position of the impeller...

...Ju Yeop Park; Myung Kyoon Chung Since knowledge on hydrodynamic torque of a butterfly valve is very important for butterfly valve design, its hydrodynamic torque is investigated theoretically. For this, a recently developed two-dimensional butterfly valve model is solved through the free-streamline...

...Jules W. Lindau; David A. Boger; Richard B. Medvitz; Robert F. Kunz A Reynolds-averaged Navier-Stokes computational model of homogeneous multiphase flow is presented. Cavitation driven thrust and torque breakdown over a wide range of advance ratios is modeled for an open propeller. Computational...

...Kevin A. Kaupert An evaluation of the torque on an impeller blade interacting with a diffuser blade is presented. Comparisons of time averaged quantities are made between computed and measured results. The calculation of the impeller blade torque was based on the axial moment from fluid forces...

...Shuliang Cao; Guoyi Peng; Zhiyi Yu A combined approach of inverse method and direct flow analysis is presented for the hydrodynamic design of gas-liquid two-phase flow rotodynamic pump impeller. The geometry of impeller blades is designed for a specified velocity torque distribution by treating...

...Sayavur I. Bakhtiyarov, Research Professor; Mihai Dupac, Graduate Student; Ruel A. Overfelt, Philpott-WestPoint Stevens Professor of Mechanical Engineering; Sorin G. Teodorescu, Research Scientist In this paper, we propose a new relationship between the opposing mechanical torque and the electric...

... via closure approximations. In the limit of weak distortional elasticity, weak translational diffusion, and weak flows, the theory yields the torque balance equation of the well-known Ericksen-Leslie theory. The intermolecular potential defined by ( 4 ) is nonlocal. In particular, the excluded...

...Guohua Li, Graduate Student; Jim C. P. Liou, Professor The hydraulic torque on the disk of a swing check valve strongly influences the dynamic valve-fluid interaction. This torque is difficult to quantify. In this study, the hydraulic torque is separated into a torque due to flow around...

...D. Maynes, Assistant Professor; M. Butcher, Research Assistant Hydrodynamic torque measurements on rotating bluff bodies are presented for 32 different bodies and three different sized tanks for Reynolds numbers in the range 10 4 - 10 5 . The present results focus on the initial period, build-up...