Compound cooling flow turbulator for turbine component

Lee, Ching-Pang; Jiang, Nan; Marra, John J; Rudolph, Ronald J

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Title: Compound cooling flow turbulator for turbine component

Abstract

Multi-scale turbulation features, including first turbulators (46, 48) on a cooling surface (44), and smaller turbulators (52, 54, 58, 62) on the first turbulators. The first turbulators may be formed between larger turbulators (50). The first turbulators may be alternating ridges (46) and valleys (48). The smaller turbulators may be concave surface features such as dimples (62) and grooves (54), and/or convex surface features such as bumps (58) and smaller ridges (52). An embodiment with convex turbulators (52, 58) in the valleys (48) and concave turbulators (54, 62) on the ridges (46) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.

Inventors:: Lee, Ching-Pang; Jiang, Nan; Marra, John J; Rudolph, Ronald J

Issue Date:: 2014-11-25

Research Org.:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1164355

Patent Number(s):: 8894367

Application Number:: 12/884,464

Assignee:: Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/18 - Hollow blades, {i.e. blades with cooling or heating channels or cavities
F01D5/187 - {Convection cooling}

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F05D2250/181 - ridged
F05D2250/60 - Structure
F05D2250/611 - undulated
F05D2250/70 - Shape
F05D2250/711 - convex
F05D2250/712 - concave
F05D2260/2212 - by creating turbulence
F05D2260/22141 - using fins or ribs

Show less

DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Resource Relation:: Patent File Date: 2010 Sep 17

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS

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                    Lee, Ching-Pang, Jiang, Nan, Marra, John J, and Rudolph, Ronald J. Compound cooling flow turbulator for turbine component.  United States: N. p., 2014. 
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                    Lee, Ching-Pang, Jiang, Nan, Marra, John J, & Rudolph, Ronald J. Compound cooling flow turbulator for turbine component.  United States.

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                    Lee, Ching-Pang, Jiang, Nan, Marra, John J, and Rudolph, Ronald J. Tue .  
        "Compound cooling flow turbulator for turbine component".  United States.  https://www.osti.gov/servlets/purl/1164355.

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@article{osti_1164355,

  title        = {Compound cooling flow turbulator for turbine component},

  author       = {Lee, Ching-Pang and Jiang, Nan and Marra, John J and Rudolph, Ronald J},

  abstractNote = {Multi-scale turbulation features, including first turbulators (46, 48) on a cooling surface (44), and smaller turbulators (52, 54, 58, 62) on the first turbulators. The first turbulators may be formed between larger turbulators (50). The first turbulators may be alternating ridges (46) and valleys (48). The smaller turbulators may be concave surface features such as dimples (62) and grooves (54), and/or convex surface features such as bumps (58) and smaller ridges (52). An embodiment with convex turbulators (52, 58) in the valleys (48) and concave turbulators (54, 62) on the ridges (46) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {11}

}

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