Abstract
A new apparatus has been developed for experimental study of basic characteristics of flow electrification phenomenon. Electricity produced on metal wire meshes as liquid flows over them was measured using the apparatus. In order to examine the effects of channel shape and solid-liquid combination, meshes with four different opening areas as well as ones made of four different kinds of metals were tested for machine oil and fluorine compound (FC) a test liquids. The measurements have revealed how the examined physical factors dominate the production of electric charge. The findings are summarized as follows; ( 1 ) electric charge produced on the metal mesh increases with an increasing liquid velocity flowing over the mesh. ( 2 ) The charge production also depends on the rate of liquid velocity change. In other words, the acceleration of flow is another dominating factor in flow electrification. ( 3 ) The longer the perimeter of a mesh is, the larger the produced charge becomes at the same velocity of liquid through the mesh. ( 4 ) Machine oil charges brass, copper and stainless steel negative, but aluminum positive, whereas FC charges all these metals positive. In electrification between machine oil and these metals, the amount of charge is the largest for brass, while the smallest for aluminum. FC produces most charge on stainless steel and least on brass and copper.
| Original language | English |
|---|---|
| Pages (from-to) | 871-878 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 73 |
| Issue number | 3 |
| Publication status | Published - Mar 2007 |
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Keywords
- Electric current
- Flow electrification
- Metal
- Relaxation
- Wire mesh
ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Experimental discussion on basic characteristics of flow electrification between dielectric liquids and metal wire meshes. / Takahashi, Satoshi; Zhu, Shouxin; Washio, Seiichi; Fujihara, Hitoshi.
In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 73, No. 3, 03.2007, p. 871-878.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experimental discussion on basic characteristics of flow electrification between dielectric liquids and metal wire meshes
AU - Takahashi, Satoshi
AU - Zhu, Shouxin
AU - Washio, Seiichi
AU - Fujihara, Hitoshi
PY - 2007/3
Y1 - 2007/3
N2 - A new apparatus has been developed for experimental study of basic characteristics of flow electrification phenomenon. Electricity produced on metal wire meshes as liquid flows over them was measured using the apparatus. In order to examine the effects of channel shape and solid-liquid combination, meshes with four different opening areas as well as ones made of four different kinds of metals were tested for machine oil and fluorine compound (FC) a test liquids. The measurements have revealed how the examined physical factors dominate the production of electric charge. The findings are summarized as follows; ( 1 ) electric charge produced on the metal mesh increases with an increasing liquid velocity flowing over the mesh. ( 2 ) The charge production also depends on the rate of liquid velocity change. In other words, the acceleration of flow is another dominating factor in flow electrification. ( 3 ) The longer the perimeter of a mesh is, the larger the produced charge becomes at the same velocity of liquid through the mesh. ( 4 ) Machine oil charges brass, copper and stainless steel negative, but aluminum positive, whereas FC charges all these metals positive. In electrification between machine oil and these metals, the amount of charge is the largest for brass, while the smallest for aluminum. FC produces most charge on stainless steel and least on brass and copper.
AB - A new apparatus has been developed for experimental study of basic characteristics of flow electrification phenomenon. Electricity produced on metal wire meshes as liquid flows over them was measured using the apparatus. In order to examine the effects of channel shape and solid-liquid combination, meshes with four different opening areas as well as ones made of four different kinds of metals were tested for machine oil and fluorine compound (FC) a test liquids. The measurements have revealed how the examined physical factors dominate the production of electric charge. The findings are summarized as follows; ( 1 ) electric charge produced on the metal mesh increases with an increasing liquid velocity flowing over the mesh. ( 2 ) The charge production also depends on the rate of liquid velocity change. In other words, the acceleration of flow is another dominating factor in flow electrification. ( 3 ) The longer the perimeter of a mesh is, the larger the produced charge becomes at the same velocity of liquid through the mesh. ( 4 ) Machine oil charges brass, copper and stainless steel negative, but aluminum positive, whereas FC charges all these metals positive. In electrification between machine oil and these metals, the amount of charge is the largest for brass, while the smallest for aluminum. FC produces most charge on stainless steel and least on brass and copper.
KW - Electric current
KW - Flow electrification
KW - Metal
KW - Relaxation
KW - Wire mesh
UR - http://www.scopus.com/inward/record.url?scp=34250156393&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34250156393&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:34250156393
VL - 73
SP - 871
EP - 878
JO - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
SN - 0387-5024
IS - 3
ER -