Prediction distribution of aerodynamic loads on wings

مقدم أطروحة جامعية

Hilal, Muhammad Aziz

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم العلوم التطبيقية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2004

الملخص الإنجليزي

The panel method is one of the numerical methods developed in the last years in analyzing the flow field around arbitrary bodies with 2-D and 3-D wings, such as the surface of bodies and the wings are divided into a number of panels, every panel has influence induce velocity on itself and other panels.

This induce velocity can be represented by simple equations which contain shape relations such as distances and angles among the panels.

These influences gather, in addition to the boundary condition, on the surface which must be applied by velocity (zero normal velocity component but the flow moves tangential on the surface).

The system of linear equation can be solved numerically to calculate the distribution of velocity on every panel and then, calculate distribution of the pressure, moment and forces on every panel.

The essential property to the panel's methods is the ability to expect the aerodynamics coefficients for arbitrary shapes (random) for both wings and bodies together or without.

It is enough for this purpose to specify, as Mach as possible, accurately for geometrical shape for these bodies or wings.

The present work using one of the panel's methods called the Vortex Lattice Method (VLM), to predict the distribution of aerodynamic loads on wings in subsonic flow.

Therefore, it tries to construct and model a computer program based on Vortex Lattice Method to study and analyze influences of the geometric characteristic of the shape of the wings such as aspect ratio, taper ratio, the area of wing, number of panels towards span wise and chord wise, Mach number and angle of attack.

In this study, the numerical results of the computer program have been compared with the theoretical and experimental results to evaluate the accusation of the results which give an acceptable agreement with theoretical and experimental results.

التخصصات الرئيسية

الهندسة الميكانيكية

الموضوعات

• الحمل الديناميكي الهوائي

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305691