BR0213216A - Method and system for obtaining dimension-related information for a flow channel - Google Patents
Method and system for obtaining dimension-related information for a flow channelInfo
- Publication number
- BR0213216A BR0213216A BR0213216-8A BR0213216A BR0213216A BR 0213216 A BR0213216 A BR 0213216A BR 0213216 A BR0213216 A BR 0213216A BR 0213216 A BR0213216 A BR 0213216A
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- dimensionless
- fluid
- radius
- calculate
- Prior art date
Links
Abstract
"MéTODO E SISTEMA PARA OBTER INFORMAçõES RELACIONADAS A DIMENSõES PARA UM CANAL DE ESCOAMENTO". Um método e um sistema para a determinação de informações relacionadas às dimensões, tais como vazão(ões) volumétrica(s) de um fluido que escoa através de um canal. Em uma implementação, o método e o sistema analisam mudanças temporais em um perfil de velocidades do fluido que se move para calcular as dimensões do canal de escoamento. Por sua vez, os dados de dimensões do canal de fluido e do perfil de velocidades do fluido podem ser combinados para calcular a vazão volumétrica do fluido que escoa através do canal. Com referência a isto, a geometria do canal pode ser caracterizada usando-se variáveis adimensionais, que relacionam dimensões, tais como o raio de uma seção reta circular, à maior extensão de uma dimensão. Como exemplo, no caso em que o canal é uma tubulação cilíndrica e um gradiente de pressão é aplicado por tempo suficiente para que o fluido tenha alcançado um estado estacionário, o raio adimensional será o raio em qualquer ponto dividido pelo raio total da tubulação. Uma ou mais variáveis adimensionais podem ser usadas para caracterizar geometrias: por exemplo, um raio adimensional caracteriza um tubo circular e dois termos adimensionais caracterizam um tubo elíptico (um para o eixo maior e outro para o eixo menor). O tempo requerido para que os perfis de velocidades mudem de um formato para outro pode ser caracterizado por um tempo adimensional. O tempo adimensional, por sua vez, utiliza a viscosidade e a densidade do fluido juntamente com o tempo e as dimensões totais do canal e pode ser usado, em combinação com pelo menos um perfil de velocidade, para calcular a vazão volumétrica do fluido que escoa através do canal."METHOD AND SYSTEM FOR OBTAINING DIMENSION INFORMATION FOR A DUMP CHANNEL". A method and system for determining size-related information, such as volumetric flow rate (s) of a fluid flowing through a channel. In one implementation, the method and system analyze temporal changes in a moving fluid velocity profile to calculate the dimensions of the flow channel. In turn, fluid channel size and fluid velocity profile data can be combined to calculate the volumetric flow of fluid flowing through the channel. With reference to this, the channel geometry can be characterized using dimensionless variables, which relate dimensions, such as the radius of a circular straight section, to the largest extent of a dimension. As an example, in the case where the channel is a cylindrical pipe and a pressure gradient is applied long enough for the fluid to reach a steady state, the dimensionless radius will be the radius at any point divided by the total pipe radius. One or more dimensionless variables can be used to characterize geometries: for example, a dimensionless radius characterizes a circular tube and two dimensionless terms characterize an elliptical tube (one for the major axis and one for the minor axis). The time required for velocity profiles to change from one format to another can be characterized by a dimensionless time. Dimensionless time, in turn, uses fluid viscosity and density along with total channel time and dimensions and can be used, in combination with at least one velocity profile, to calculate the volumetric flow rate of the flowing fluid. through the channel.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32862501P | 2001-10-10 | 2001-10-10 | |
US34570002P | 2002-01-04 | 2002-01-04 | |
PCT/US2002/032426 WO2003032556A2 (en) | 2001-10-10 | 2002-10-10 | Method and system for obtaining dimension related information for a flow channel |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0213216A true BR0213216A (en) | 2005-01-25 |
Family
ID=34067797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0213216-8A BR0213216A (en) | 2001-10-10 | 2002-10-10 | Method and system for obtaining dimension-related information for a flow channel |
Country Status (1)
Country | Link |
---|---|
BR (1) | BR0213216A (en) |
-
2002
- 2002-10-10 BR BR0213216-8A patent/BR0213216A/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 8A ANUIDADE(S). |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2108 DE 31/05/2011. |