update gif and fix aachen turbine link

Author: bigfooted

_data/tutorials.yml

@@ -30,6 +30,7 @@
   - Inc_Streamwise_Periodic
   - Inc_Species_Transport
   - Inc_Species_Transport_Composition_Dependent_Model
+  - Inc_Von_Karman
   - Inc_Turbulent_Bend
   - Inc_Laminar_Von_Karman
 

_tutorials/compressible_flow/Aachen_Turbine/Aachen_Turbine.md

@@ -1,10 +1,10 @@
 ---
 title: Aachen turbine stage with Mixing-plane
 permalink: /tutorials/Aachen_Turbine/
-written_by: @alecappiello
+written_by: alecappiello
 for_version: 8.1.0
-revised_by: @joshkellyjak
-revision_date: xxx
+revised_by: joshkellyjak
+revision_date: 
 revised_version: 8.1.0
 solver: RANS
 requires: SU2_CFD

_tutorials/incompressible_flow/Inc_Von_Karman/Inc_Von_Karman.md

@@ -9,12 +9,11 @@ revised_version:
 solver: INC_NAVIER_STOKES
 requires: SU2_CFD
 complexity: intermediate
-follows: -
 ---
 
-![von_karman_street](../../../tutorials_files/incompressible_flow/Inc_Von_Karman/images/unsteady_cylinder.mp4)
+![von_karman_street](../../../tutorials_files/incompressible_flow/Inc_Von_Karman/images/unsteady_cylinder.gif)
 
-Figure (1): impression of the von Karman vortex shedding.
+Figure (1): impression of the von Karman vortex shedding. A high quality mp4 video can be found [here](../../../tutorials_files/incompressible_flow/Inc_Von_Karman/images/unsteady_cylinder.mp4)
 
 ## Goals
 

_tutorials/index.md

@@ -50,6 +50,8 @@ Simulation of unsteady, external, viscous flow around an airfoil.
 Perform uncertainty quantification of errors arising due to assumptions inherent in turbulence models.
 * [Non-ideal compressible flow in a supersonic nozzle](/tutorials/NICFD_nozzle/)    
 Simulation of compressible flow in a nozzle using non-ideal thermodynamic models.
+* [Turbomachinery: Aachen Turbine stage with mixing plane](/tutorials/Aachen_Turbine/)    
+Simulation of compressible flow of the Aachen turbine demonstrating turbomachinery application.
 
 #### Incompressible Flow
 
@@ -71,6 +73,8 @@ Simulation of internal, turbulent, incompressible flow in a unit cell of a 2D pi
 Simulation of internal, turbulent, incompressible flow through a mixing channel.
 * [Species Transport Composition Dependent Model](/tutorials/Inc_Species_Transport_Composition_Dependent_Model/)    
 Simulation of internal, turbulent, 3D incompressible flow through a Kenics static mixer.
+* [Vortex Shedding](/tutorials/Inc_Von_Karman/)    
+Simulation of unsteady laminar vortex shedding behind a circular cylinder.
 * [Turbulent Bend](/tutorials/Inc_Turbulent_Bend/)    
 Simulation of turbulent flow in a 90 degree pipe bend using wall functions.