The objective of the Stanford ASC project is to develop a framework able to perform multi-disciplinary, integrated simulations on massively parallel platforms. 4 This paper focuses on the turbomachinery computation and, in particular, on the physics of interaction of different turbomachinery components in the engine. Typical flow features such as tip and horse-shoe vortices as well as blade wak...

in this paper, the fluid-structure interaction phenomenon and the research history are described. then due to the complex and specific working conditions of a turbine blade, we have investigated the phenomenon on this subject. the fluid-structure interaction on a turbine blade model has been simulated by using structural and fluid flow section of ansys software. a model of turbine blade with ai...

Most small–medium-sized turbine studies have focused on presenting new design methods and corresponding performance improvements rather than detailed dynamic investigations. This paper presents comprehensive investigations of a straight swept-back blade for 100 kW by performing modal analysis, load flutter analysis. The considered cases include steady wind operational conditions under normal ex...

This paper presents a comprehensive approach for CAD based geometry handling in support of single and multidisciplinary analysis and design. Unlike previous schemes, the model presented here allows for hands-off automated meshing, a requirement for design studies. Multidisciplinary analysis is handled through solid modeling constructs, using the geometry as a transfer media. For design applicat...

We give a simple argument proving the lonely runner conjecture in the case where the speed of the runners forms a certain lacunary sequence. This improves an earlier result by Pandey, and is then used to derive that for each number of runners the lonely runner conjecture is true for a set of nonzero measure in a natural probability space.

This effort summarizes the work performed under Task IV, Sector Rig Pests of the CRT Critical Research and Support Technology Program, a Department of Energy funded project. The rig tests of a can-type combustor were performed to demonstrate two advanced ground power engine combustor concepts: steam cooled rich-burn combustor primary zones for enhanced durability; and variable combustor geometr...

Generating a high startup torque is critical factor for the application of small wind turbines in regions with low speed. In present study, blades turbine were designed and optimized to maximize output power torque. For this purpose, chord length twist angle considered as design variables, multi-objective optimization study was used assess optimal blade geometry. The element momentum (BEM) tech...

Associate Profe ssor of M echanical Engineering, California Institute of Technology, Pasad e na , Calif. Assoc. Mem. ASME A free-streamline flow through a cascade of semi-infinite flat plates is taken as a simplified model of the cavitation process in a helical inducer pump. The length and thickness of the resulting cavity is determined as a f unction of blade geometry and cavitation parameter....

In this research, a gas turbine blade cascade was investigated. Flow analysis around the blade was conducted using RSM and RNG.K-ε turbulence modeling and it is simulated by Fluent software. The results were considered for the cases as Mach number loss at the trailing edge of blade caused by vortexes that were generated at the end of blade. Effect of cooling flow through the trailing edge on th...

Probabilistic analysis is rapidly developing into a desirable tool to improve design processes. Incorporating probabilistics with optimization of three dimensional components is a step towards improving many current deterministic design systems. This paper develops a general purpose method using MSC/PATRAN and MSC/NASTRAN for three dimensional shape optimization that incorporates probabilistic ...