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Prediction of Transient Cooling Behavior in Short-Duration Facilities

Parsons, Mitchell William

Abstract Details

2011, Master of Science, Ohio State University, Mechanical Engineering.

For many years designers have been pushing turbine inlet temperatures to higher and higher levels in order to create more efficient gas turbine engines. To keep hot section components from melting, advancements in turbine materials and cooling schemes are being explored. One area of research has been focused on the internal passages for cooled turbine vanes and blades. The Ohio State University Gas Turbine Laboratory (OSU GTL) is currently conducting an experimental program to investigate the heat transfer characteristics for internal coolant passages using a multiple passage serpentine channel configuration.

The internal heat transfer experimental configuration requires cooling gas at a specific temperature. Traditionally at OSU GTL, coolant gas is supplied from a supply tank operating in a blowdown mode. It has proven difficult to maintain the cooling gas at the desired temperature due to the heating effect of the supply tubing and internal passages.

This thesis develops a model that utilizes a simplified form of the non-dimensional heat exchanger equations to predict fluid temperatures for cooling supply components operating over a wide range of conditions and geometries. Heat exchangers are typically designed with long non-dimensional lengths and short non-dimensional times. However, short non-dimensional lengths and long non-dimensional times are characteristics of cooling system components. Even though the two types of components have drastically different physical geometries and non-dimensional quantities, the simplified non-dimensional equations can be used to model both components. By providing an analytical understanding of the problem as well as a numerical design code, various components undergoing transient heat transfer can be modeled and unique designs can be evaluated. The application of the numerical code reaches beyond the internal heat transfer program and can be applied to a variety of different heat transfer projects at the OSU GTL.

Michael Dunn, Dr. (Advisor)
Charles Haldeman, Dr. (Committee Member)
106 p.

Recommended Citations

Citations

  • Parsons, M. W. (2011). Prediction of Transient Cooling Behavior in Short-Duration Facilities [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1312379529

    APA Style (7th edition)

  • Parsons, Mitchell. Prediction of Transient Cooling Behavior in Short-Duration Facilities. 2011. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1312379529.

    MLA Style (8th edition)

  • Parsons, Mitchell. "Prediction of Transient Cooling Behavior in Short-Duration Facilities." Master's thesis, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1312379529

    Chicago Manual of Style (17th edition)