DC Water Film Motor

Introduction

This page is dedicated to the research concerning a novel mechanism of water film rotation. The device consists of a two-dimensional cell used for electrolysis of water films, as simple as an insulator frame with two electrodes on the sides, to which an external in-plane electric field E, perpendicular to the mean electrolysis current density J, is applied.

Publications

[1] A. Amjadi, R. Shirsavar, N. HAmedani Radja, and M.R. Ejtehadi

[2] R. Shirsavar, A. Amjadi, N. Hamedani Radja, M. D. Niry,  M. Reza Rahimi Tabar, and M.R. Ejtehadi,

Movies

1. 

   The movie shows the film rotation under variant electric field and/or electrolysis voltage. Following table indicates the values during the experiment.
   

   Time

   ‎0‎

   ‎2‎

   ‎4‎

   ‎5‎

   ‎7‎

   ‎11‎

   ‎14‎

   ‎15‎

   ‎17‎

   ‎27‎

   ‎29‎

   ‎31‎

   Electrolysis voltage (V)‎

   Off

   ‎+400‎

   Off

   ‎+400‎

   Off

   ‎-400‎

   Off

   ‎-400‎

   ‎-400‎

   ‎-400‎

   Off

   ‎+400‎

   Electric field(kV/m)‎

   ‎36‎

   ‎36‎

   ‎36‎

   ‎36‎

   ‎36‎

   ‎36‎

   ‎36‎

   ‎36‎

   from 36 to 129‎

   ‎129‎

   ‎129‎

   ‎129‎

   
   

   Electrolysis cell dimensions:  12 ×15 mm2
   Glycerin volume fraction:  0.375

2. 

   The movie shows the film rotation under variant electric field and/or electrolysis voltage. Following table indicates the values during the experiment.
   

   Time(s)‎	‎0‎	‎1‎	‎+1‎	‎5	‎+5‎	‎10‎	‎+10‎	‎14‎	‎25	‎32‎	‎33‎
   Electrolysis voltage(V)‎	‎+536‎	Off	‎+536‎	Off	‎-536‎	Off	‎-536‎	‎-536‎	‎-536‎	Off	‎+536‎
   Electric field(kV/m)‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	from 36 to 129‎	‎129‎	‎129‎	‎129‎

   
   

   Electrolysis cell dimensions:  12 ×15 mm2
   Glycerin volume fraction:  0.375

3. 
   The movie shows the instance that external electric field passes threshold and rotation starts.
   Electrolysis cell dimensions:  31 × 31 mm2
   Glycerin volume fraction:  0.02
   
   
4. 
   Rotation in a rectangular electrolysis frame. It shows how boundary conditions controls the number and shape of vortices.
   

   Time(s)‎	‎0‎	‎2‎	‎12‎	‎15	‎23‎	‎26‎	‎34	‎37‎	‎41‎	‎56
   Electrolysis Voltage(V)‎	Off	‎176‎	Off	‎176‎	Off	‎-176‎	Off	‎-176‎	‎-176‎	‎-176‎
   Electric Field(kV/m)‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	‎36‎	from 36 to 144‎	‎144‎

   
   Electrolysis cell dimensions:  10 ×31 mm2
   Glycerin volume fraction:  0.375
   
   
5. 
   A 30 × 50 mm2 electrolysis cell is partitioned to about 10 × 10 mm2 squares using cotton string.
   
   

   Time(s)‎	‎0	‎1‎	‎9	‎10‎	‎15‎	‎20	‎33‎	‎34‎	‎44
   Electrolysis voltage(V)‎	Off	‎+528‎	Off	‎+528‎	‎+528‎	‎+528‎	Off	‎-528‎	‎-528‎
   Electric field(kV/m)‎	‎62.5‎	‎62.5‎	‎62.5‎	‎62.5‎	62.5 to 125‎	‎125‎	‎125‎	‎125‎	125 to ‎zero

   
   
6. 
   Electrolysis voltage: 120 V
   Electric field: 60 kV/m
   Electrolysis cell dimensions:  31 × 31 mm2
   Glycerin volume fraction:  0.14
   
   
7. 
   Electrolysis voltage: 120 V
   Electric field: 60 kV/m
   Electrolysis cell dimensions:  31 × 31 mm2
   Glycerin volume fraction:  0.22
   
   
8. 
   A 30 × 50 mm2 electrolysis cell is partitioned to about 10 × 10 mm2 squares using cotton string. The movie has been recorded approximately 5 minutes after the rotation has been started.