13 July 2001

Y-traverses are done at 5.72 cm/s.

I. IMAGES: Setting is on "Linears" and 10ms.

in file 13jul01 on mac.

A. Background image for the whole day:
   Preferences: Save as background: Load
   
   
   bg13jul01.1.tiff

A. SN

A.1. mode 6: wavemaker.4hz.mode6.m.965.dat:  b13

    sn6.13jul01

a.2 mode 3: wavemaker.3.33hz.mode3.m.960.dat: b10

    sn3.13jul01


B. COSINE


B.1. mode 6:  4hz (P997=10); b8 (P998=6) amplitude = .63V(P999=.63)

   cos6.13jul01

B.2. mode 3: 3.33 hz (P997=12); b8, P998 = 3, amp=.67 (p999=.67)

  cos3.13jul01

C. STRAIGHT-CRESTED SINE WAVE

  (4 hz, amp = .63V)
 b9 P999=.63; P997 = 10; P998 = 0.

      angle0.4hz.amp63.13jul01

13 July 2001

II. Wave traces in y: The gage is mounted on a lead screw. It traverses in y at
    a constant speed, which is: 5.72cm/s (about 30 sec)

Starting out in front of the 3rd wavepaddle. End in front of about paddle 24.
Binding keeps it from going all the way across.

A. SN

A.1. mode 6:wavemaker.4hz.mode6.m.965.dat:  b13

The wave front had huge crescents facing forward. Then, the crests fold back on
themselves. Then the crests sort of straighten out. (I'm looking at one spot near
the wavemaker - so I'm seeing the wave front and then the "steadystate" wave).
There are ripples on the faces of the waves.

  A.1.a. x = 450cm from edge of tank closest to wall.

    sn6.Y1.13jul01
  
  A.1.b. x = 1215 cm from edge of tank. Here we probably started the carriage before
     the wave really got there in its evolved form.

    sn6.Y2.13jul01
  
A.2 mode 3: wavemaker.3.33hz.mode3.m.960.dat: b10

There are still crests, but I don't see them fold back.

  A.1.a. x = 1215 cm from edge of tank.
  
      sn3.Y1.13jul01

  A.1.b. x = 450 cm from edge of tank.
  
      sn3.Y2.13jul01

13 July 2001

B. COSINE

The wierd crescent to dimpled crescent did not appear for the cosine case 
with 3.33hz. 

B.1. mode 6: 3.33 hz b8, P998 = 6

  B.1.a. x = 1215 cm from edge of tank. amplitude = 0.3V (P999=.3).

    cos6.Y1.amp3.13jul01

  B.1.b. x = 1215 cm from edge of tank. amplitude = 0.63V (P999=.63).

    cos6.Y2.amp63.13jul01

Wierd crescent back for 3.33 hz and 4 hz at large amplitude:
    
B.2. mode 6: 4hz (P997=10); b8 (P998=6) amplitude = .63V(P999=.63)
 
  B.2.a. x = 1215 cm from edge of tank.
  
    cos6.Y3.amp63.13jul01
    
B.3. mode 3: 3.33 hz (P997=12); b8, P998 = 3, amp=.67 (p999=.67)

    cos3.Y4.amp67.13jul01
    
  B.3.a. x = 1215 cm from edge of tank.
  

13 July 2001

C. STRAIGHT-CRESTED SINE WAVE:

b9 P999=.63; P997 = 10; P998 = 0.
   
x = 1215 cm from edge of tank.

   4 hz amplitude = .63. b9. 

   angle0.Y5.4hz.amp63.13jul01

D. NO WAVES. PADDLES POWERED AND OSCILLATING OUT OF THE WATER.

x = 1215 cm from edge of tank.

   4 hz amplitude = .63V. b9. 
   
   nowaves.Y6.4hz.amp63.13jul01
   
************************************8

20 July 01

I. Sn, mode 3, small amplitude (0.3V=.237cm), 4hz
wavemaker.4hz.mode3.m.954.dat
b14
sweep in y.

x = 1215 cm from edge of tank.

   sn3.Y1.amp3.20jul01

II. Straight-crested, small amplitude (0.3V), 4hz.

sweep in y
x = 1215 cm from edge of tank.

angle0.Y1.4hz.amp3.20jul01

III. Images

A. Sn mode 3, b14 ; wavemaker.4hz.mode3.m.954.dat
   sn3.amp3.20jul01
   
B. Angle 4hz, .3V zero angle

  angle0.4hz.amp3.20jul01
  
C. 24 Augus 01

   cosine mode 6; amp = 0.63; f = 3.33hz
   
   cos6.amp63.f3.33.24aug01