Math model meeting 20110513
1. News from Qiuyang:
Qiuyang tried the VPP Boatarchitect from Gerard de Roy:
lots of inputs to define
how are the calculations made/ black box
--> we drop it!
Qiuyang found another white box VPP
-->That´s more the kind of VPP we like.
2. News from Gonzalo
" I have made a little of research about oil skimming/absorbing. There is a lot of material out there... but I'm getting convinced that towing the boom from just one end will not be as effective as towing it, e.g., from both ends with 2 proteis. Not a single publivcation/article/explaination in the net shows oil absortion in the intended way. I'm sure that it works, but I have big doubts about its effectiveness compared to U- or J-towing."
See the three documents attached in the Oil boom page.
3. News from Etienne:
A. simplified VPP: add 2 tonnes to the ship resistance: that´s the pulling capacity objective
B. from this, plot:
*the sail force as a function of sail area in 1 wind condition (side wind: we don´t need a polar!)
*the power requirement to pull the ship+ the load at 1 knot as a function of ship length
C. added resistance in wave: add 500kg to the resistance
This enables a first calculation of the main dimensions of Protei.
Need to correct the Lift and Drag coefficients used for the calculation.
Etienne: continue working on simplified VPP
Qiuyang: continue researching VPPs
Gonzalo: work on student project proposal: boom measurements / detailed VPP?