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Case 1.3a (NMRI)

Conditions:

References:

Not yet available.

Requested computations:

Table/Figure# Items EFD Data Submission Instruction
Data + Tecplot layout file Image Image files Sample + Tecplot layout file
1.3a-1 \(u, v, w\) contours and cross flow vectors at \(x/L_{PP} = 0.9625\) (SS 3/8) Refer to sample file for detail <Common>
Axis:
\(-0.035 < Y/L_{PP} < 0.035 \)
\(-0.065 < z/L_{PP} < 0.005 \)
Aspect ratio = 1:1
Frame line of SS 3/8 should be drawn.

<Contours>
Filename:
[Identifier]_S2-woDuct-woProp_U_1-3a.png (for \( u / U \) )
[Identifier]_S2-woDuct-woProp_V_1-3a.png (for \( v / U \) )
[Identifier]_S2-woDuct-woProp_W_1-3a.png (for \( w / U \) )
[Identifier]_S2-woDuct-woProp_OMGX_1-3a.png (for \( \displaystyle{\omega_x \cdot \frac{L_{PP}}{U} } \) )
Contour style: lines
Line Style: solid positive, dashed negative
Contour intervals:
\( \Delta (u/U) = 0.1, \Delta (v/U) = 0.1, \Delta (w/U) = 0.1 \) and \( \Delta \omega_x \cdot \displaystyle{\frac{L_{PP}}{U}} =20 \)

<Cross flow vectors>
Filename:
[Identifier]_S2-woDuct-woProp_VW_1-3a.png
Vector length: \(0.004\) [Magnitude/Grid Units]
Length of Reference vector: 1.0 		Case1.3a_SPIV.zip
Contours of \( \omega_x \) is not included.(Oct. 08, 2015)
1.3a-2 \(u, v, w\) contours and cross flow vectors at \(x/L_{PP} = 0.9843\)
(between duct and propeller, 110[mm] ahead from AP)		 Refer to sample file for detail <Common>
Axis and Aspect ratio are same as Case1.3a-1

<Contours>
Filename:
[Identifier]_S4-woDuct-woProp_U_1-3a.png (for \( u / U \) )
[Identifier]_S4-woDuct-woProp_V_1-3a.png (for \( v / U \) )
[Identifier]_S4-woDuct-woProp_W_1-3a.png (for \( w / U \) )
[Identifier]_S4-woDuct-woProp_OMGX_1-3a.png (for \( \displaystyle{\omega_x \cdot \frac{L_{PP}}{U} } \) )
The others are same as Case1.3a-1

<Cross flow vectors>
Filename:
[Identifier]_S4-woDuct-woProp_VW_1-3a.png
The others are same as Case1.3a-1
1.3a-3 \(u, v, w\) contours and cross flow vectors at \(x/L_{PP} = 1.0000\) (AP) Refer to sample file for detail <Common>
Axis and Aspect ratio are same as Case1.3a-1

<Contours>
Filename:
[Identifier]_S7-woDuct-woProp_U_1-3a.png (for \( u / U \) )
[Identifier]_S7-woDuct-woProp_V_1-3a.png (for \( v / U \) )
[Identifier]_S7-woDuct-woProp_W_1-3a.png (for \( w / U \) )
[Identifier]_S7-woDuct-woProp_OMGX_1-3a.png (for \( \displaystyle{\omega_x \cdot \frac{L_{PP}}{U} } \) )
The others are same as Case1.3a-1

<Cross flow vectors>
Filename:
[Identifier]_S7-woDuct-woProp_VW_1-3a.png
The others are same as Case1.3a-1
1.3a-4 Wave elevation contours Refer to sample file for detail Axis:
\(-0.25 \lt x/L_{PP} \lt 1.25 \)
\(-0.5 \lt y/L_{PP} \lt 0.0 \)
Filename: [Identifier]_fs_1-3a.png
Contour level : \(-0.008 \lt z/L_{PP} \lt 0.012\)
Contour interval : \(\Delta z/L_{PP}=0.0005\), #level=41
 Contour style : positive solid line, negative dashed line 		Case_1.3a-4.zip
1.3a-5 Wave profile Refer to sample file for detail Axis:
\(-0.5 \lt x/L_{PP} \lt 2.0 \)
\(-0.008 \lt z/L_{PP} \lt 0.012 \)
Filename: [Identifier]_wave_profile_1-3a.png
Line style : CFD solid line, EFD open circles 		Case_1.3a-5.zip
1.3a-6 Longitudinal wave cut at \( y/L_{PP} = -0.1043 \) Refer to sample file for detail Axis:
\(-0.5 \lt x/L_{PP} \lt 2.0 \)
\(-0.004 \lt z/L_{PP} \lt 0.002 \)
Filename: [Identifier]_wave_cut_y-1043_1-3a.png
Line style : CFD solid line, EFD open circles 		Case_1.3a-6and7.zip
1.3a-7 Longitudinal wave cut at \( y/L_{PP} = -0.1900 \) Refer to sample file for detail Axis:
\(-0.5 \lt x/L_{PP} \lt 2.0 \)
\(-0.002 \lt z/L_{PP} \lt 0.002 \)
Filename: [Identifier]_wave_cut_y-1900_1-3a.png
Line style : CFD solid line, EFD open circles
1.3a-8 Grid density distribution along the waterline, and in transverse and vertical directions at mid-ship Refer to sample file for detail

File name: [Identifier]_grid_1_3a.png
< Item 1 >
Number of cells per fundamental wave length in longitudinal direction at \( y / L_{PP} = -0.1043 \) at the still water plane level:
\( ppwl = \displaystyle{\frac{2 \pi {F_n}^2}{\Delta x / L_{PP}}} \) vs. \( x / L_{PP} \).
Axis:
\(-0.25 \lt x/L_{PP} \lt 1.25 \)
\(0 \lt ppwl \lt 200 \)
Line style : solid line

< Item 2 >
Number of cells per fundamental wave length in transverse direction at midship, along y axis and at the still water plane level:
\( ppwl = \displaystyle{\frac{2 \pi {F_n}^2}{\Delta y / L_{PP}}} \) vs. \( y / L_{PP} \).
Axis:
\(-0.25 \lt y/L_{PP} \lt 1.25 \)
\(0 \lt ppwl \lt 200 \)
Change sign of the grid y-coordinate if necessary
Line style : dashed line

< Item 3 >
Nondimensionalised cell size in vertical direction at midship and \( y/L_{PP}=-0.1043\), along z axis:
\( \Delta z / L_{PP} \) vs. \( z / L_{PP} \).
Axis:
\(0 \lt \Delta z/L_{PP} \lt 0.002 \) (adjust if exceeded)
\(-0.01 \lt z/L_{PP} \lt 0.01 \)
Axis labels on the opposite side of the previous items.
Line style : dashed-dotted line

 Case_1.3a-8.zip
1.3a-9 Vortex core analysis
(Added on Oct. 09, 2015)		 N/A Refer to PDF instruction (Tokyo_2015_Vortex_Analysis.pdf) in Case_1.3a-9_20151015.zip for detail.
36 image files (red-letter in the instruction) and 2 Tecplot™ data files (blue-letter in the instruction) are requested to be submitted.
Please archive all image and data files to a zip file named:
JBC_VA_(family name of participant)_(organization of participant)_(month+date).zip
(ex. JBC_VA_KOBAYASHI_NMRI_1020.zip ) then upload it to the FTP server.
The deadline for submission is November 1, 2015. 		Case_1.3a-9_20151015.zip
Three PNG files in ./Figures/Vortex_View/ are updated on Oct. 15, 2015. The figures in the Tokyo_2015_Vortex_Analysis.pdf included in the archive are also updated.

Note: a positive (+) sinkage value is defined upwards and a positive (+) trim value is defined bow up.

Submission Instructions:

All quantities are non-dimensionalized by denstiy of water (\(\rho\)), ship speed (\(U\)), and length between parpendiculars (\(L_{PP}\)): \begin{align*} F_r = \frac{U}{\sqrt{g \cdot L_{PP}}}, \quad R_e = \frac{U \cdot L_{PP}}{\nu} \end{align*} where \(g\) is the gravitational acceleration and \(\nu\) is the kinematic viscosity.