Changes between Version 18 and Version 19 of GravoTurbulence


Ignore:
Timestamp:
10/31/11 11:27:48 (13 years ago)
Author:
Jonathan
Comment:

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  • GravoTurbulence

    v18 v19  
    11= Gravo-Turbulence =
     2
     3The goal is to study how different initial conditions lead to a state of gravitational collapse and characterize the turbulence and to either back-out how viable formation mechanisms for MC's or determine that IC's are not important to MC evolution. 
     4
     5Possible different IC's to use:
     6  * Pure density perturbations (with either an Isothermal eq of state - or IICooling to trigger thermal instabilities)
     7  * Initial solenoidal velocity fields (virial equilibrium)
     8  * Compressive flows (2 finite streams)?
     9  * Magnetically critical clouds
     10
     11
     12== Density Perturbations ==
     13Goal is to put a cloud with random perturbations following a given power spectra [[latex($P_\xi(k)=Ak^\beta$)]] for [[latex($k_{\min} <= k <= k_{\max}$)]] where [[latex($\xi=\log(\rho)$)]].  The perturbations will be windowed on a region with a finite radius embedded in a much lower density region.  Since [[latex($\int{P_\xi(k)dk}  = \int{\hat{\xi}(k)k^2dk}$)]] we must have [[latex($\hat{\xi}(k) \propto k^\alpha$)]] where [[latex($\alpha = \beta-2$)]]
     14
     15== Velocity Perturbations ==
     16
     17
    218
    319== References ==