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Structured gas-containing surfaces

A structured surface, gas technology, applied in the direction of hull, hull design, fluid flow, etc., to improve the effect of reducing friction, inhibit or reduce turbulence, and reduce friction

Active Publication Date: 2020-11-24
BADEN WURTTEMBERG STIFFUNG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] The disadvantage of the micro-air technology is of course that it requires constant pumping (nachpumpen) of air through the compressor

Method used

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Embodiment Construction

[0042] The gas-retaining layer formed from the liquid-repelling structure is configured to retain gas by the gas-retaining layer during operational use of the structured surface according to the invention. As a result, the object on which the structured surface according to the invention is applied is at least partially, preferably completely, separated from the liquid by the gas. The gas retained by the gas retaining layer is immobilized by the gas retaining layer such that the gas advantageously does not rise to the liquid surface or become entrained by the liquid flow.

[0043] According to the present invention, the gas-retaining layer can be designed to be the same as the gas-retaining surface covering described in WO 2013 / 131618A2, and the entire content can be referred to this invention.

[0044] In particular, the gas-retaining layer has protrusions or protruding elements at least in sections on the liquid-facing side, wherein the surface of the gas-retaining layer has...

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Abstract

The present invention relates to structured gas-containing surfaces for improving the friction-reducing properties of gas layers held under a liquid and for the simultaneous suppression of turbulences. The present invention further relates to a device comprising said structured gas-containing surface and to the use of said structured gas-containing surface.

Description

technical field [0001] The invention relates to a gas-holding structured surface for improving the friction-reducing properties of a gas layer held under a liquid and at the same time for suppressing turbulence. The invention also relates to a device comprising said structured gas-retaining surface and to the use of said structured gas-retaining surface. Background technique [0002] Around 90% of international trade worldwide is carried out by ships. Yet ships also cause serious environmental damage. According to recent studies, ship exhaust into the atmosphere is responsible for 60 000 fatalities per year. According to reports, the 15 largest ships produced sulfur dioxide (SO 2 ) produces more sulfur dioxide than all the cars in the world combined. Furthermore, in order to avoid biofouling of the submerged surfaces of the hull, the ship discharges large quantities of highly toxic substances into the water. In addition, a large amount of energy is wasted due to frictio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15D1/00B08B17/06B63B1/36B63B1/38B63B59/04
CPCB63B1/36B63B1/38B63B59/045F15D1/004F15D1/008F15D1/0085B08B17/065Y02T70/10
Inventor T·席梅尔
Owner BADEN WURTTEMBERG STIFFUNG GMBH