Is There Horizontal Hydraulic Conductivity in Soil?

[fonseh]

Homework Statement

why there's no horizontal conductivity in this question ?

Homework Equations

The Attempt at a Solution

IMO , there's also horizontal conducitivity in this question because of the water can also flow horizontally across layer A , B and also C . [/B]

 

[Chestermiller]

What do you think the k's are?

 

[fonseh]

What do you think the k's are?

coefficient of permeability

 

[Chestermiller]

coefficient of permeability

No. They are the hydraulic conductivites. Do you know the definition of hydraulic conductivity?

 

[fonseh]

i

No. They are the hydraulic conductivites. Do you know the definition of hydraulic conductivity?

it is to measure the permeability . Why there's no horizontal hydraulic conductivity in the example above ?

 

[Chestermiller]

i

it is to measure the permeability . Why there's no horizontal hydraulic conductivity in the example above ?

Because the flow is vertical, and the pressure is constant over all horizontal planes.

 

[fonseh]

Because the flow is vertical, and the pressure is constant over all horizontal planes.

do you mean the water can't flow horizontally thru different layer ? so there is no horizontal permeability ? Why ?

 

[Chestermiller]

do you mean the water can't flow horizontally thru different layer ? so there is no horizontal permeability ? Why ?

There is horizontal permeability, but the flow is in the vertical direction (according to the problem description).

 

[fonseh]

There is horizontal permeability, but the flow is in the vertical direction (according to the problem description).

Can you point out whoich part of the problem stated the flow is vertical ? The water can also flow in horizontal direction across different layer of soil A, B and C , right ?

 

[Chestermiller]

Can you point out whoich part of the problem stated the flow is vertical ? The water can also flow in horizontal direction across different layer of soil A, B and C , right ?

This is not the way I remember the problem. Maybe I'm thinking of a different problem. In this problem, the flow is purely horizontal, with no vertical component.

 

[fonseh]

This is not the way I remember the problem. Maybe I'm thinking of a different problem. In this problem, the flow is purely horizontal, with no vertical component.

Do you mean it's vertical flow? Not horizontal flow ?

 

[Chestermiller]

No. In the picture in the first post, the flow is horizontal.

 

[fonseh]

No. In the picture in the first post, the flow is horizontal.

Since the flow is horizontal , why there's no horizontal permeability ?

 

[fonseh]

No. In the picture in the first post, the flow is horizontal.

Can you point out which part show that the flow is horizontal ?

 

[Chestermiller]

Can you point out which part show that the flow is horizontal ?

The three layers in the figure are inside a tube which is obviously horizontal.

 

[Chestermiller]

Since the flow is horizontal , why there's no horizontal permeability ?

The problem statement says that the tabulated values of hydraulic conductivity are in the direction of flow.

 

[fonseh]

The three layers in the figure are inside a tube which is obviously horizontal.

why ? The water can flow both horizontally and vertically . Why there's only vertical permeability ?

 

[fonseh]

The problem statement says that the tabulated values of hydraulic conductivity are in the direction of flow.

Previously , you pointed out that the flow is horizontal , if so , why there's no horizontal permeability in this question ?

 

[Chestermiller]

Previously , you pointed out that the flow is horizontal , if so , why there's no horizontal permeability in this question ?

You are aware of the relationship between the permeability and the hydraulic conductivity, correct?

 

[fonseh]

You are aware of the relationship between the permeability and the hydraulic conductivity, correct?

yes, can you explain further ?

 

[fonseh]

You are aware of the relationship between the permeability and the hydraulic conductivity, correct?

Previously , you pointed out that the flow is horizontal , if so , why there's no horizontal permeability in this question ?

 

[fonseh]

You are aware of the relationship between the permeability and the hydraulic conductivity, correct?

So , the flow is only vertical flow ? no horizontal flow ?

 

[Chestermiller]

So , the flow is only vertical flow ? no horizontal flow ?

THE FLOW IN THIS PROBLEM IS HORIZONTAL. THE DATA IN THE TABLES ARE THE HYDRAULIC HYDRAULIC CONDUCTIVITIES. IF YOU KNOW THE HYDRAULIC CONDUCTIVITES, THEN YOU DON'T NEED TO KNOW THE PERMEABILITIES IN HEAD CALCULATIONS.

I don't know what else I can add.