3 edition of **An analytical approach to grid sensitivity analysis for NACA four-digit wing sections** found in the catalog.

An analytical approach to grid sensitivity analysis for NACA four-digit wing sections

- 81 Want to read
- 4 Currently reading

Published
**1992**
by Dept. of Mechanical Engineering & Mechanics, College of Engineering & Technology, Old Dominion University, National Technical Information Service [distributor] in Norfolk, Va, [Springfield, Va.?
.

Written in English

- Aerodynamics.,
- Airplanes -- Wings.

**Edition Notes**

Statement | by I. Sadrehaghighi and S.N. Tiwari, principal investigator. |

Series | NASA-CR -- 190251., NASA contractor report -- NASA CR-190251. |

Contributions | Tiwari, S. N., United States. National Aeronautics and Space Administration. |

The Physical Object | |
---|---|

Format | Microform |

Pagination | 1 v. |

ID Numbers | |

Open Library | OL15363370M |

In the NACA four digit family of airfoils, the first digit represents the maximum camber (p) multiplied by , the second is the chordwise location of the maximum chamber (m) multiplied by 10, and the last two digits represent the airfoil maximum thickness (t) multiplied by Cited by: 6. A description of their approach appears in AIAA Paper , “Grid and Design Variables Sensitivity Analysis for NACA Four-Digit Wing-Sections.” A Configuration Aerodynamics 1/17/06 A Tabulated Airfoil Definition and the Airfoil Library Most modern airfoils are not described by equations, but are defined by a table of coordinates.

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Fourteenth International Conference on Numerical Methods in Fluid Dynamics Proceedings of the Conference Held in Bangalore, India, 11–15 July Hypersonic viscous flow computations with solver and grid sensitivity analysis. Fourteenth International Conference on Numerical Methods in Fluid Dynamics. and suitable grid, enables direct di eren tiation of grid co ordinates with resp ect to design parameters. 4; 5 The underlying e ort here is to a v oid the time consuming and costly n umerical di eren tiation. In addition, the analytical deriv ativ es are exact, a desirable feature for sensitivit y analysis. An imp ortan t ingredien t of grid.

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DEPARTMENT OF MECHANICAL ENGINEERING & MECHANICS COLLEGE OF ENGINEERING & TECHNOLOGY OLD DOMINION UNIVERSITY NORFOLK, VIRGINIA AN ANALYTICAL APPROACH TO GRID SENSITIVITY ANALYSIS FOR NACA FOUR-DIGIT WING SECTIONS By I. Sadrehaghighi, Graduate Research Assistant and S.N. Tiwari. Get this from a library.

An analytical approach to grid sensitivity analysis for NACA four-digit wing sections. [I Sadrehaghighi; S N Tiwari; United States. An interactive algebraic grid-generation technique is employed to generate C-type grids around NACA four-digit wing sections.

An analytical procedure is developed for calculating grid sensitivity with respect to design parameters of a wing section.

A comparison of the sensitivity with that obtained using a finite difference approach is : I. Sadrehaghighi and S. Tiwari. An interactive algebraic grid-generation technique is employed to generate C-type grids around NACA four-digit wing sections.

An analytical procedure is developed for calculating grid sensitivity with respect to design parameters of a wing section. A comparison of the sensitivity with that obtained using a finite-difference approach is made.

Sadrehaghighi, R.E. Smith, and S.N. Tiwari, Grid and Design Variable Sensitivity Analysis for NACA Four-Digit Wing-Sections, AIAA PaperJanuary Google Scholar [30]Cited by: A discrete semi-analytical procedure for aerodynamic sensitivity analysis including grid sensitivity.

Grid and design variables sensitivity analyses for NACA four-digit wing-sections. TSZE TAI; 17 August An analytical approach to grid sensitivity by: Grid and design variables sensitivity analyses for NACA four-digit wing-sections.

to grid sensitivity analysis for NACA four-digit wing sections An analytical approach to grid sensitivity. Created Date: Wed Aug 25 Wing models Using NACA aerofoil, wooden models for rectangular wing and curved leading edge wing are prepared having the same span ( mm) and equal surface area ( mm 2).

Each model is provided with 32 pressure tapings along the span and chord (16 at upper surface & 16 at lower surface).Cited by: 2. This grid-sensitivity analysis indicates that a grid of size x for this 2-D case is sufficient to capture the drag to within less than 1% of its "exact" (no discretization error) value.

Notes: Each successive grid level was run for at least multigrid cycles. NACA RESEARCH MEMORANDUM 2 CONFIDENTIAL NACA RM LF29a b span of basic wing, ft C wing chord, ft CD drag coefficient based on exposed wing area of sq ft M Mach number National Advisory Committee for Aeronautics, Langley Field, Va., J CONFIDENTIAL.

The aerodynamic airfoils of wind turbine blades have crucial influence on aerodynamic efficiency of wind turbine. This involves the selection of a suitable airfoil section for the proposed wind turbine blade. In this paper NACA airfoil profile is considered for analysis of wind turbine blade.

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS TECHNICAL NOTE INVESTIGATION OF N AIRFOIL SECTIONS WITH BOUNDARY-LAYER CONTROL AND AN ANALYTICAL STUDY OF THEIR POSSIBLE APPLICATIONS By Elmer A.

Horton, Stanley F. Racisz, and Nicholas J. Paradiso SUMMARY NACA series airfoil sections Author: Elmer A. Horton, Stanley Frank Racisz, Nicholas J. Paradiso. It attains the maximum value for the airfoils of NACANACAand NACA at 15o and for airfoils of NACANACA and NACA is at 14o of angle of attack.

The baseline characteristics and analysis of NACA 4 series airfoils are presented in this Size: KB. An interactive algebraic grid-generation technique is employed to generate C-type grids around NACA four-digit wing sections.

An analytical procedure is developed for calculating grid sensitivity. Surendra N. Tiwari's 15 research works with 34 citations and reads, including: aiaa-joa. Report presenting testing of NACA series airfoil sections to determine the effect of boundary-layer control by means of suction through an airfoil chord on the pressure distribution, lift, and drag characteristics of two different types of airfoil sections.

Substantial reductions in wake drag were obtained through a wide range of lift coefficients with relatively moderate flow coefficients Author: Elmer A.

Horton, Stanley Frank Racisz, Nicholas J. Paradiso. Created Date: Fri Dec 3 The generators of the NACA 4-digit airfoils were included in this set of shape functions. It is found that the supercritical wing section, Korn airfoil, could be well represented by a set of ten shape functions.

A description of their approach appears in AIAA PaperGrid and Design Variables Sensitivity Analysis for NACA Four-Digit Wing-Sections. A Applied Computational Aerodynamics 10/23/97 A. Robert E. Smith's 23 research works with 91 citations and reads, including: Grid Sensitivity in Airplane Design.The NACA four digit wing sections define the profile by: 1.

One digit describing the maximum camber as percentage of the chord: 2. One digit describing the distance of maximum camber from the airfoil leading edge in tens of percents of the chord: 3.

Two digits describing maximum thickness of the airfoil as percent of the chord. [2] by: 8.Consider the data for the NACA airfoil given in Figure Calculate the lift and moment about the quarter chord (per unit span) for this airfoil when the angle of attack is 4° and the freestream is at standard sea level conditions with a velocity of 50 ft/s.

The chord of 96%(54).