A comparative study was carried out for fun to revise basic FEA concepts in NASTRAN. The displacement of a cantilever beam under a point load is calculated by hand and compared to numerical results performed using NASTRAN's beam library.
3D modeling in CATIA software to visualize and design aircraft fuselage substructures, which are then validated for reliability using Ansys Structural tool to ensure the selection of a robust fuselage framework based on performance analysis.
The images above indicate the 3D CFD domain of the geometry to be analyzed. The following images show the meshing (kept less dense as per project requirement) of the domain and derived CFD results of the Mach number, Pressure and Temperature.
The distribution of Isentropic Mach number over the blade surface is calculated by creating the number of planes perpendicular to the surface and taking the mass flow average value of the parameter on these particular planes. The images below shows the graphical representation of the distribution.
The pressure loss in the turbine cascade is calculated using this formula
The design of the nozzle using the original dimensions was carried out in Solidworks. The design is shown in the image below.
The following images show the meshing and the results of different operating conditions:
1. Subsonic Choke 2. Supersonic Design 3. Normal shock in the nozzle 4. Oblique shock 5. Prandtl- Mayer expansion.
When the back pressure at the nozzle exit lies somewhere between the oblique shock condition and expansion condition, when the exit flow points directly in the normal direction to the engine cross-section, it gives the optimum and efficient thrust making it the best operating condition.
For a bio-inspired blade to be more effective, the pitch angle must be greater than the critical value (36 Degrees).
When the pitch angle is more than critical, a bio-inspired blade performs more efficiently than a conventional blade.
Additionally, it is more effective and produces more lift as compared to conventional blades.
Many More to be Published