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Free practice (combined) - German GP.

1. Lewis Hamilton Britain McLaren-Mercedes 1m 32.149s
2. Sebastian Vettel Germany Red Bull-Renault 1m 32.331s
3. Jenson Button Britain Brawn-Mercedes 1m 32.369s
4. Mark Webber Australia Red Bull-Renault 1m 32.480s
5. Jarno Trulli Italy Toyota-Toyota 1m 32.511s
6. Adrian Sutil Germany Force India-Mercedes 1m 32.585s
7. Rubens Barrichello Brazil Brawn-Mercedes 1m 32.664s
8. Fernando Alonso Spain Renault-Renault 1m 32.774s
9. Kazuki Nakajima Japan Williams-Toyota 1m 32.872s
10. Nelson Piquet Jr Brazil Renault-Renault 1m 32.992s
11. Nick Heidfeld Germany BMW Sauber 1m 33.012s
12. Felipe Massa Brazil Ferrari-Ferrari 1m 33.052s
13. Nico Rosberg Germany Williams-Toyota 1m 33.128s
14. Robert Kubica Poland BMW Sauber 1m 33.161s
15. Timo Glock Germany Toyota-Toyota 1m 33.172s
16. Kimi Raikkonen Finland Ferrari-Ferrari 1m 33.182s
17. Heikki Kovalainen Finland McLaren-Mercedes 1m 33.724s
18. Giancarlo Fisichella Italy Force India-Mercedes 1m 33.839s*
19. Sebastien Buemi Switzerland Toro Rosso-Ferrari 1m 33.903s
20. Sebastien Bourdais France Toro Rosso-Ferrari 1m 34.025s

all times unofficial

* denotes driver setting time in first of two sessions



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Race winner Nico Rosberg (GER) Mercedes AMG F1 celebrates on the podium.
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numbers

July 10, 2009 5:28 PM

@richard...I'll take a guess. They have heat exchangers in both pods, so could be they're sending the HX exhaust out the same body ports as engine exhaust. The high exhaust velocity might draw more flow through the HX's, something like a jet pump. If they need more cooling capacity on one side than the other (additional HX, different sized HX on the left for packaging), the mass flow differs per side. If it does, they would likely size each port cross-section to bring the flows to the same exit velocity. The flow velocity would probably be more important than the mass flow since additional external flow around the body can make up for varying mass flow. Just thinking out loud.



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