datasetmeca:flow2dpastheadtedcylinder1
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Ci-dessous, les différences entre deux révisions de la page.
Prochaine révision | Révision précédente | ||
datasetmeca:flow2dpastheadtedcylinder1 [2021/12/15 11:51] – créée yann | datasetmeca:flow2dpastheadtedcylinder1 [2023/05/26 18:54] (Version actuelle) – yann | ||
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===== 2D flow around a heated square-cylinder - $Re_{h}= 50$, $Ra= 5\; 10^6$ ===== | ===== 2D flow around a heated square-cylinder - $Re_{h}= 50$, $Ra= 5\; 10^6$ ===== | ||
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- | Numerical study based on the publication of Pham et al., Journal of Marine Science and Technology, Vol. 18, No. 3, pp. 361-368 (2010)\\ | + | A heated square-cylinder is placed in a channel flow |
- | The motion of the cylinder is vertical and forced with a sinusoïdal function\\ | + | |
</ | </ | ||
- | **Author** : Y. Fraigneau | + | **Author** : Y. Fraigneau, LISN, UMR CNRS 9015 (yann.fraigneau@lisn.fr) \\ |
- | **Date** | + | **Date** |
- | **Simulation type** : DNS ([[https:// | + | **Simulation type** : DNS (code Sunfluidh -- [[https:// |
- | **Location** : /DATABASE_2DFLOW_AROUND_OSCILLATING_CYLINDER_DNS | + | **Location** : /DATABASE_2DFLOW_AROUND_HEATED_SQUARECYLINDER_DNS |
- | **Status** : Free access \\ | + | **Status** : Free access |
- | **Data size** : ~ 7 Gb \\ | + | **Data size** : ~ 1 Gb \\ |
- | {{ : | + | {{ : |
- | [[https:// | + | [[https:// |
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=== 2D sketch === | === 2D sketch === | ||
- | {{ : | + | {{ : |
- | \\ | + | |
- | + | ||
=== Referential : cartesian geometry === | === Referential : cartesian geometry === | ||
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* x(i) : downstream direction | * x(i) : downstream direction | ||
* y(j) : normal direction | * y(j) : normal direction | ||
- | - origin : | + | - origin : lower left corner of the computational domain |
- | * $x_0= 0$ : centre of the cylinder | + | * $x_0= 10h$ |
- | * $y_0= 0$ : mid-height | + | * $y_0= -6h$ |
=== Reference scales === | === Reference scales === | ||
* Density | * Density | ||
- | | + | |
* Velocity | * Velocity | ||
* Dynamic viscosity : dynamic viscosity of the fluid ($\mu_0$) | * Dynamic viscosity : dynamic viscosity of the fluid ($\mu_0$) | ||
- | * Reynolds number : $Re_H= \frac{\rho_0.U_0.D}{\mu_0}= | + | * thermal diffusivity : ($\kappa_0$) |
- | | + | * Reynolds number |
- | * motion magnitude : $A \times D$ (where A is the motion factor) | + | |
=== Non-dimensionalised data === | === Non-dimensionalised data === | ||
* velocity | * velocity | ||
* density | * density | ||
- | * coordinates : $x*=\frac{x}{D}$, $y^*=\frac{y}{D}$ | + | * coordinates : $x*=\frac{x}{h}$, $y^*=\frac{y}{h}$ |
+ | * temperature : $T^*=\frac{T-T_c}{T_h-T_c}$ ($T_h$ and $T_c$ are respectively the temperature imposed at the cylinder' | ||
=== Computational domain === | === Computational domain === | ||
- **Domain scope** | - **Domain scope** | ||
- | - computational domain size | + | - computational domain size (channel flow) |
- | * Downstream direction(x) : $L_x^*= | + | * Downstream direction(x) : $L_x^*= |
- | * Normal direction | + | * Normal direction |
- | - Oscillating | + | - heated square |
- | * centre position at rest : $x_c= 0.0$ and $y_c= 0.0$ | + | * size: $h^*= 1$ |
- | * diameter: $D^*= 1$ | + | * wall temperature T_h^*= 1 |
- | * oscillation frequency : $St= 0.95$ or $St= 1.2$ | + | |
- | * The cylinder is modeled with a pseudo-penalisation method (Pasquetti et al., Applied Numerical Mathematics, | + | |
- **Boundary conditions** | - **Boundary conditions** | ||
* Inlet : imposed pressure uniform velocity ($U_0=1$) | * Inlet : imposed pressure uniform velocity ($U_0=1$) | ||
* Outlet | * Outlet | ||
- | * Bottom and top conditions | + | * Bottom and top conditions |
- **Spatial resolution** | - **Spatial resolution** | ||
- | * mesh size : $480 \times | + | * mesh size : $512 \times |
* About cell-size | * About cell-size | ||
- | * $\Delta x*$ : from $0.0125$ to $0.78785$$ (downstream direction) | + | * $\Delta x*$ : from $0.03125$ to $0.723$ (downstream direction) |
- | * $\Delta y*$ : from $0.0125$ to $0.65924$ (normal direction) | + | * $\Delta y*$ : from $0.03125$ to $0.187$ (normal direction) |
[[: | [[: | ||
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* **Time series ** | * **Time series ** | ||
- | * from probes | ||
* Physical quantities : velocity components along x and y directions (u,v) and pressure (p) | * Physical quantities : velocity components along x and y directions (u,v) and pressure (p) | ||
* 1 probe | * 1 probe | ||
- | * Time step= $2 \,10^{-2}$ time unit | + | * Time step= $\approx 6 \,10^{-2}$ time unit (irregular time step) |
- | * Time range : 400 to 600 time units | + | * Time range : 250 time units |
- | * Location : Xi= 3.5 , Xj=0.0 | + | * Location : Xi= 20.0 , Xj=2.0 |
- | * File name (per physical quantity): x_ins_00000.d | + | * File name (per physical quantity): x_ins_00000.d |
- | * about cylinder motion | + | |
- | * center position as a function of time (ASCII file ibm_position01.dat) | + | |
- | * cylinder velocity as a function of time (ASCII file ibm_velocity01.dat) | + | |
- | * global force components applied to the cylinder (ASCII file ibm_force01.dat) | + | |
- | * force contributions exerted on the moving cylinder (ASCII file ibm_force_contribution01.dat, | + | |
* **3D snapshots** | * **3D snapshots** | ||
* Instantaneous fields : velocity components in x, y and z directions (U,V), the pressure (P) and the phase function related to the body motion (TRACE) | * Instantaneous fields : velocity components in x, y and z directions (U,V), the pressure (P) and the phase function related to the body motion (TRACE) | ||
- | * Recording rate : 0.4 time unit | + | * Recording rate : 1 time unit |
- | * Time range from from 200.0 to 600.0 time units | + | * Time range from from 20.0 to 250.0 time units |
* File name : res_xxxxx_yyyyyyy.d | * File name : res_xxxxx_yyyyyyy.d | ||
- | * MPI subdomain ID: 0 | + | * MPI subdomain ID: from 0 to 3 (case with MPI domain decomposition) |
- | * Time ID : from 3 to 502 | + | * Time ID : from 0 to 250 |
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---- | ---- | ||
- | **Data size** : ~ 7 Gb \\ | + | **Data size** : ~ 3 Gb \\ |
- | **Main directory** : / | + | **Main directory** : / |
- | For more details about files, see the [[https:// | + | |
- | Intermediate directories (four cases of study) | + | Directories |
- | * $St= 0.95$ and $A= 0.2$ - directory : CAS_F0.95_A0.2 | + | |
- | * $St= 0.95$ and $A= 0.5$ - directory : CAS_F0.95_A0.5 | + | |
- | * $St= 1.20$ and $A= 0.2$ - directory : CAS_F1.2_A0.2 | + | |
- | * $St= 1.20$ and $A= 0.5$ - directory : CAS_F1.2_A0.5 | + | |
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- | Endpoint directories | + | |
/ | / | ||
- | input data file for sunfluidh : input3d.dat | + | input data file for sunfluidh : input3d.dat |
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/GRID : ASCII files | /GRID : ASCII files | ||
input data file : data_meshgen.d | input data file : data_meshgen.d | ||
- | grid files for sunfluidh: maillx.d, mailly.d, maillz.d | + | grid files for sunfluidh: maillx.d, mailly.d, maillz.d |
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/ | / | ||
+ | / | ||
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/ | / | ||
- | | + | |
- | ibm_position01.dat, | + | |
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datasetmeca/flow2dpastheadtedcylinder1.1639565465.txt.gz · Dernière modification : 2021/12/15 11:51 de yann