therealfatman
In Memoriam
Posted by TMZ
Esoteric interpretations of discipline specific claims to specific terminology wether they be from engineering, meteorology ,chemistry etc . notwithstanding, I'll stick with them since they represent fields more closely related to reef keeping.
Give me a break. They show channel flow in a flume and the sediment transport due to that flow and add in diffusion as a result of that advection. Thats shows they are using the fluid dynamics/hydrology approach of sediment transport due to horizontal flow of water. They are suing an approach from outside their discipline but clearly showing that in illustrations. They in doing so defined advection as it is used and defined used by fluid dynamics/hydrology. They can not do that then say it is something different. I do not think they are doing so, but are just trying to use advection to describe something out side the scope of advection as it is defined even by them. They are using it improperly as it is a limited approach as all it deals with is sediment transport. They can not use and define two different advections in the same study without distr inguishing between the tow differing definitions otr appraches etc. At least Boomer talks about "ANOTHER ADVECTION" which deals with upwelling due to water temperature differences. Hev clearly distinguishes between two differing uses of the terminolgy advection, he does nor omott the temperture differences which clearly defines convection as being called advection.
One can not take an approach from another discipline use it call it as defined by that discipline and then say the word that defines it will now be used to explain something it does not cover. That is ludicrous. So what you wrote is quite moot. Escotric is in appropriatte to your case as they cleraly defined advection when they used sediment transport in a flume (channel) to explain advection and its actions.
Maybe Boomer not looking at this simple logic is what got him sidetracked in accepting the improper use of the fluid dynamics/hydrology advection approach by the touted scientists.
Advection, in chemistry, mechanical and chemical engineering, is a transport mechanism of a substance or a conserved property with a moving fluid. The fluid motion in advection is described mathematically as a vector field, and the material transported is typically described as a scalar concentration of substance, which is contained in the fluid.
An example of advection is the transport of pollutants or silt in a river: the motion of the water carries these impurities downstream.
Meteorological or oceanographic advection follows isobaric surfaces and is therefore predominantly horizontal. DUH.
Distinction between advection and convection
Occasionally, the term advection is used as synonymous with convection. However, many engineers prefer to use the term convection to describe transport by combined molecular and eddy diffusion, and reserve the usage of the term advection to describe transport with a general (net) flow of the fluid (like in river or pipeline).
The scalar field with advection is horizontal when the water flow is horizontal as in the research at issue.
Water movement upward due to heat is occasionally referred to by some as advection but it has nothing to do with this discussion.
Esoteric interpretations of discipline specific claims to specific terminology wether they be from engineering, meteorology ,chemistry etc . notwithstanding, I'll stick with them since they represent fields more closely related to reef keeping.
Give me a break. They show channel flow in a flume and the sediment transport due to that flow and add in diffusion as a result of that advection. Thats shows they are using the fluid dynamics/hydrology approach of sediment transport due to horizontal flow of water. They are suing an approach from outside their discipline but clearly showing that in illustrations. They in doing so defined advection as it is used and defined used by fluid dynamics/hydrology. They can not do that then say it is something different. I do not think they are doing so, but are just trying to use advection to describe something out side the scope of advection as it is defined even by them. They are using it improperly as it is a limited approach as all it deals with is sediment transport. They can not use and define two different advections in the same study without distr inguishing between the tow differing definitions otr appraches etc. At least Boomer talks about "ANOTHER ADVECTION" which deals with upwelling due to water temperature differences. Hev clearly distinguishes between two differing uses of the terminolgy advection, he does nor omott the temperture differences which clearly defines convection as being called advection.
One can not take an approach from another discipline use it call it as defined by that discipline and then say the word that defines it will now be used to explain something it does not cover. That is ludicrous. So what you wrote is quite moot. Escotric is in appropriatte to your case as they cleraly defined advection when they used sediment transport in a flume (channel) to explain advection and its actions.
Maybe Boomer not looking at this simple logic is what got him sidetracked in accepting the improper use of the fluid dynamics/hydrology advection approach by the touted scientists.
Advection, in chemistry, mechanical and chemical engineering, is a transport mechanism of a substance or a conserved property with a moving fluid. The fluid motion in advection is described mathematically as a vector field, and the material transported is typically described as a scalar concentration of substance, which is contained in the fluid.
An example of advection is the transport of pollutants or silt in a river: the motion of the water carries these impurities downstream.
Meteorological or oceanographic advection follows isobaric surfaces and is therefore predominantly horizontal. DUH.
Distinction between advection and convection
Occasionally, the term advection is used as synonymous with convection. However, many engineers prefer to use the term convection to describe transport by combined molecular and eddy diffusion, and reserve the usage of the term advection to describe transport with a general (net) flow of the fluid (like in river or pipeline).
The scalar field with advection is horizontal when the water flow is horizontal as in the research at issue.
Water movement upward due to heat is occasionally referred to by some as advection but it has nothing to do with this discussion.
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...Sorry. It is again your demand that we all use your definition. And your last post is just a repeat of the other one.
