1 / 10

Compressible Flow : possible topics to cover in CFD class .

Compressible Flow : possible topics to cover in CFD class . Bocal 1D (Anderson – Comp Fluid Dyn .) Chock tube 1D (Anderson, Stadke ) Supersonic jet expansion Prandtl Mayer compression / expansion Supersonic flat plate NACA 0012 transonic (Marco Antônio tese)

percy
Download Presentation

Compressible Flow : possible topics to cover in CFD class .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CompressibleFlow: possibletopics to cover in CFD class. • Bocal 1D (Anderson – CompFluidDyn.) • Chocktube 1D (Anderson, Stadke) • Supersonicjetexpansion • Prandtl Mayer compression/expansion • Supersonic flat plate • NACA 0012 transonic (Marco Antônio tese) • Bluntbodyshokwave

  2. Explore Sub-sonicpotentialFlow • Lookif it is possible to explore supersonicpotentialflow. • Howonecanhandletransonicpotentialflow. This is a big issuebecause M < 1 ellipitcequation, M>1 hyperbolicequation. Pherhaps a way to go is to use transient approach which is a marchingprocedurecapable to capture shocks. • How to set upcompressiblepotentialflow in phoencs. Use bernouli to getpressure.

  3. Bocal 1d • Already developed in c-v-nozzle. The nozzle shape was developed in a fitting using excel. The area porosities derived from this fit and were inserted in phoenics using inform. • The nozzle has heat addition but no-friction (yet). • The model does not have diffusive terms. It uses quick scheme. The pressure term due wall inclination still have to be discussed. According to IM250 homework there is a term but according to Anderson’s book it does not have see pg 292, eq. 7.25. • Actually the momentum equation and energy equation have to be clearly stated in 1D form before going to cfd. It has to be done in a document. • The flow in the nozzle is isoentropic. The heating is done upstream the nozzle. • The theoretical isoentropic relationship have to be developed to check the numerical solution. • The shock capture have to be explored. What is conserved, what changes along the shock. The shock thickness and it grid dependecy.

  4. ShockTube 1d • It has to explore the time step in a shock tube. • Anderson, Rhostko and Stadeke books have some material about shock tube solutions.

  5. ShockTube 1d • It has to explore the time step in a shock tube. • Anderson, Rhostko and Stadeke books have some material about shock tube solutions.

  6. Supersonic Jet Expansion • It introduces the use of ‘parabolic’ model to a 2D flow capable to handle hyperbolic flow because it is a marching procedure. • The main issue is the parabolic set up in phoenics including the special inform commands.

  7. Prandt Mayer Expansion • Parabolic /hyperbolicmodel in phoenics • Compare withanalytical/numerical solution given in Anderson pg. 174

  8. Supersonic Flat Plate • Challengingproblembecausethere is non-viscousflowwith a boundarylayerviscousflow and shockinteraction. • Theenergyequationhas to considerthedissipationtermwhichwillincreasetheairtemperaturenearthewall. • Seediscussion in Anderson, pg. 449 and also in theanalytical solution (kamotaniclass)

  9. Transonic NACA 0012 • Getthe MS thesisof Marco Antônio

  10. BluntBody • A challenge. I don´t haveany material to start with.

More Related