At the other hand, lines of flux are redirected into flux of higher speed. Parts of slow flow are integrated into faster flow. Wind pulls wind towards itself.
At the other hand, lines of flux are redirected into flux of higher speed. Parts of slow flow are integrated into faster flow. Wind pulls wind towards itself.
Like spreading of pressure, also that ´suction-effect´ affects immediately and far reaching. In addition, thereby results ordered flow with relative high density.
Third possibility for acceleration of flow is achieved by reducing cross sectional area. That´s well know by wind within straits or narrowness between tower blocks.
All these possibilities should be used by design of wind-engines, in order to produce ´more wind´ simply and really.
As an example, this picture shows small wind-engine by ´fish-shape´. Picture below shows some more details, left side by cross sectional view, right side by sight from backside.
Fish-ConceptionSecond, this body is surrounded by a ring, between body and ring are bars, so also ring is fix in space. This ring here is drawn blue.
Contour of body and ring are shaped that kind, between both is jet-like space with decreasing cross sectional surface. At the other hand, outer side of ring is shaped like upper side of wings. Cross section of ring thus is like wing´s profile.
Turning rotor with its wings here are marked red. Lines of flow and surface of wind here are marked green.
Wind at centre, at first is redirected outward by body. This ´pressure-wave´ however is not lost for system (as every ´bow-wave´ normally is), but is reflected by inner side of ring. Without any doubt, flow at end of this ´jet´ is much stronger than original speed of wind (however optimum bending of body and ring is to determine by experiments).
Without any doubt, at outer side of ring, flow also is accelerated essentially, based at profile of this surrounding ´wing´. This flow is redirected towards inside, alongside bending of body.
Without any doubt, also end of body represents an area of suction, based at reduced cross sectional surface. Into this area, flux falls and normal molecular speed contributes essentially to acceleration of that wind.
Acceleration many Times
1. given wind is accelerated essentially within ring-shaped jet,
2. this air falls into suction area at backside small body, whereby this suction affects ahead until bow of body and far in front of,
3. wing-profile of ring affects also suction area, so air outside of ring is accelerated, whereby also this suction affects far ahead of ring,
4. this outer flow is pulled inside towards faster flow alongside small part of body,
5. lastly this accelerated flow as a whole draws inward wind-flow from far outside and far ahead of engine, so given wind is accelerated and concentrated as well.
This ´artificial´ wind, produced by this ´barrier´, produces additional wind from surrounding area. Onto circled surface of wings turning, thus wind-energy of much larger surface is concentrated, here e.g. wind-energy of 80 % larger surface is usable. In addition, this wind is essentially faster and more massive cause this flux is ordered and thus shows high density.
Potential
Disadvantageous only is this large ´hull´, e.g. at strong winds. So this design preferably will be used as decentral power engines of relative small size (where however large demands exist).
Nevertheless, this concept is well to use at small water-energy-stations, where water flow is available only at small distances. And this concept is rather well to use flows within sea.
Above this, this principle of ´artificial wind by suction´ resp. acceleration of flux is to use at many applications (see Fluid-Technology).
Evert, 20. November 1999