Air Vehicles Technology Integration Program (AVTIP). Delivery Order 0020: Prediction of Manufacturing Tolerances for Laminar Flow

2005 ◽  
Author(s):  
Aaron Drake ◽  
Anne M. Bender ◽  
William D. Solomon ◽  
Vavra Jr. ◽  
Andrea J.
Keyword(s):  
Technology Integration ◽  
Laminar Flow ◽  
Integration Program ◽  
Manufacturing Tolerances ◽  
Air Vehicles

Manufacturing Tolerances for Natural Laminar Flow Airframe Surfaces

1985 ◽  
Author(s):  
Bruce J. Holmes ◽  
Clifford J. Obara ◽  
Glenn L. Martin ◽  
Christopher S. Domack
Keyword(s):  
Laminar Flow ◽  
Manufacturing Tolerances ◽  
Natural Laminar Flow

scholarly journals Examining School Administrators’ Technology Integration Leadership

2021 ◽  
pp. 38-42
Author(s):  
Janette B. Torrato ◽  
◽  
Socorro E. Aguja ◽  
Maricar S. Prudente
Keyword(s):  
Technology Integration ◽  
Policy Development ◽  
Teaching And Learning ◽  
School Administrators ◽  
Educational Institution ◽  
Technology Leadership ◽  
Research Approach ◽  
Technology In The Classroom ◽  
Integration Program ◽  
Challenging Tasks

Technology leadership drives the technology integration program of any educational institution. School administrators take challenging tasks in integrating technology in the classroom. Their roles are critical to ensure that students’ learning in today’s context is globally relevant. Relatedly, this study examined the technology integration leadership of school administrators involved in a school-wide initiative via a three-module series seminar workshop on action research using descriptive qualitative research approach. A thematic analysis of the written abstracts provided an overview of the technology leadership of school administrators. Specifically, results revealed four technology related themes namely; School Policy Development, Professional Development of Teachers, Blended Learning Approach, & Teaching Strategies to Enhance Learning. Further research focusing on each theme is recommended to determine its impact to the actual teaching and learning implementation in the school.

Effects of Nonuniform Passages on Compact Heat Exchanger Performance

1980 ◽  
Vol 102 (3) ◽  
pp. 653-659 ◽  
Author(s):  
R. K. Shah ◽  
A. L. London
Keyword(s):  
Heat Exchanger ◽  
Laminar Flow ◽  
Heat Transfer Performance ◽  
Compact Heat Exchanger ◽  
Reduced Pressure ◽  
Nusselt Numbers ◽  
Friction Factors ◽  
Special Cases ◽  
Longitudinal Wall ◽  
Manufacturing Tolerances

Neighboring passages in a compact heat exchanger such as a rotary regenerator are never geometrically identical due to manufacturing tolerances. This passage-to-passage nonuniformity can result in a significant penalty on heat transfer performance with only a small compensating effect of reduced pressure drop. Continuous cylindrical passage geometries, operating with laminar flow, are particularly sensitive to these effects. In this paper, a procedure is outlined to establish the effective friction factors and Nusselt numbers for one fluid side of an exchanger having n different cylindrical passage geometries. Two special cases of longitudinal wall temperature variation are considered corresponding to conditions of Cmin/Cmax of zero and unity. The analysis is presented for both fully developed and developing laminar flow.

Laminar Flow Gas Turbine Regenerators—The Influence of Manufacturing Tolerances

1970 ◽  
Vol 92 (1) ◽  
pp. 46-56 ◽  
Author(s):  
A. L. London
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Laminar Flow ◽  
Gas Turbine ◽  
Metal Foil ◽  
Friction Behavior ◽  
Flow Type ◽  
F Factor ◽  
Manufacturing Tolerances ◽  
The Difference

Several current designs for high effectiveness gas turbine regenerators involve low Reynolds number fully developed, laminar flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel. The cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deepfold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an in. in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer (j factor) and friction (f factor) characteristics as a function of Reynolds number for various surfaces of the laminar flow type.

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