Author: Peter L. MeitnerPublisher: DIANE Publishing
ISBN: 142891675X
Category : Heat
Languages : en
Pages : 40
Book Description
Computer Code for Predicting Coolant Flow and Heat Transfer in Turbomachinery
Author: Peter L. MeitnerPublisher: DIANE Publishing
ISBN: 142891675X
Category : Heat
Languages : en
Pages : 40
Book Description
Computer Code for Predicting Coolant Flow and Heat Transfer in Turbomachinery
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722121716
Category :
Languages : en
Pages : 40
Book Description
A computer code was developed to analyze any turbomachinery coolant flow path geometry that consist of a single flow passage with a unique inlet and exit. Flow can be bled off for tip-cap impingement cooling, and a flow bypass can be specified in which coolant flow is taken off at one point in the flow channel and reintroduced at a point farther downstream in the same channel. The user may either choose the coolant flow rate or let the program determine the flow rate from specified inlet and exit conditions. The computer code integrates the 1-D momentum and energy equations along a defined flow path and calculates the coolant's flow rate, temperature, pressure, and velocity and the heat transfer coefficients along the passage. The equations account for area change, mass addition or subtraction, pumping, friction, and heat transfer. Meitner, Peter L. Glenn Research Center DA PROJ. 1L1-61102-AH-45; RTOP 505-62-0K...
A Generalized One-Dimensional Computer Code for Turbomachinery Cooling Passage Flow Calculations
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781724993960
Category :
Languages : en
Pages : 30
Book Description
A generalized one-dimensional computer code for analyzing the flow and heat transfer in the turbomachinery cooling passages was developed. This code is capable of handling rotating cooling passages with turbulators, 180 degree turns, pin fins, finned passages, by-pass flows, tip cap impingement flows, and flow branching. The code is an extension of a one-dimensional code developed by P. Meitner. In the subject code, correlations for both heat transfer coefficient and pressure loss computations were developed to model each of the above mentioned type of coolant passages. The code has the capability of independently computing the friction factor and heat transfer coefficient on each side of a rectangular passage. Either the mass flow at the inlet to the channel or the exit plane pressure can be specified. For a specified inlet total temperature, inlet total pressure, and exit static pressure, the code computers the flow rates through the main branch and the subbranches, flow through tip cap for impingement cooling, in addition to computing the coolant pressure, temperature, and heat transfer coefficient distribution in each coolant flow branch. Predictions from the subject code for both nonrotating and rotating passages agree well with experimental data. The code was used to analyze the cooling passage of a research cooled radial rotor. Kumar, Ganesh N. and Roelke, Richard J. and Meitner, Peter L. Glenn Research Center NASA-TM-102079, E-4839, NAS 1.15:102079, AVSCOM-TR-89-C-013, AD-A242628 DA PROJ. 1L1-61102-AH-45; RTOP 535-05-10...
NASA Technical Paper
Author: Scientific and Technical Aerospace Reports
Author: NASA Scientific and Technical Publications
Author: Aeronautical Engineering
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 568
Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
NASA Tech Briefs
Author: NASA SP.
Author: Mathematical Modeling, Simulation and Optimization for Power Engineering and Management
Author: Simone GöttlichPublisher: Springer Nature
ISBN: 3030627322
Category : Technology & Engineering
Languages : en
Pages : 333
Book Description
This edited monograph offers a summary of future mathematical methods supporting the recent energy sector transformation. It collects current contributions on innovative methods and algorithms. Advances in mathematical techniques and scientific computing methods are presented centering around economic aspects, technical realization and large-scale networks. Over twenty authors focus on the mathematical modeling of such future systems with careful analysis of desired properties and arising scales. Numerical investigations include efficient methods for the simulation of possibly large-scale interconnected energy systems and modern techniques for optimization purposes to guarantee stable and reliable future operations. The target audience comprises research scientists, researchers in the R&D field, and practitioners. Since the book highlights possible future research directions, graduate students in the field of mathematical modeling or electrical engineering may also benefit strongly.