MATPAN2D is an attempt to create a fast, simple, and hackable design tool for interesting aerodynamic phenemona. These include power-effects, inteference between bodies, etc.
MATPAN2D is released under the MIT License.
Rob McDonald
- Suite of tools for aerodynamic analysis and design of concepts with propulsion and/or interaction
- Mix of custom-developed and off-the-shelf code
- Simplifications aggressively accepted/pursued
- Capture essential physics
- Speed development & execution
- Reduce design space
- Clarify concept benefits or drawbacks
- Informed design preferred to optimization
- 2D Axisymmetric panel code (planar eventually)
- Lumped ring-vortex with Dirichlet BC (V=0 on surface)
- Based on: R. I. Lewis, Vortex Element Methods for fluid Dynamic Analysis of Engineering Systems , 1991
- Actuator disk
- Uniform loading, no swirl, contracted streamtube
- Ducted -- zero or large tip-gap (> Rd/10) can be modeled
- Flexible & Fast
- Custom Matlab implementation
- Arbitrary combinations of bodies, ducts & disks
- NACA 4-Digit duct generated on-the-fly
- ~0.1 to 3 seconds for solution, ~10-15 seconds for visualization
- Compressibility Correction
- Gothert's Rule w/ NRL Semi-empirical correction
- Compressibility Correction -- Gothert's Rule
- BL2D Integration
- NASA-TM-83207 Harris & Blanchard 1982
- Loose coupling
- Prescribed inviscid pressure distributions
- Strong coupling (may be possible / Planned)
- Momentum thickness feedback to inviscid solver
- Converge on combined viscous/inviscid flow
- Design (Planned)
- Inviscid inverse design
- Inviscid general pressure distribution matching
- Design pressure distribution to tailor boundary layer
- Gothert's Rule w/ NRL Semi-empirical correction for bodies used to recover Cp.
- Notes:
- Used equations 1 & 27-29.
- u, v, w are perturbation velocities
- U=1 assumed.
- Th. E. Labrujere, W. Loeve, and J. W. Slooff, An Approximate Method for the Calculation of the Pressure Distribution on Wing-Body Combinations at Subcritical Speeds, National Aerospace Laboratory NLR, Amsterdam Netherlands, 1971, in AGARD-CP-71.