# Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 4 (Q.No. 8)

8.

The discharge for the confined tube well is obtained from

Discussion:

11 comments Page 1 of 2.
Heer said:
5 years ago

r2 and r1 = radii of two observeration wells. In Thiem's formula.

And

In Dupuit's formula,

R = radius of influence,

Rw = radius of the main pumped well.

So, the given answer is correct.

And

In Dupuit's formula,

R = radius of influence,

Rw = radius of the main pumped well.

So, the given answer is correct.

Heer said:
5 years ago

Given answer is correct one because in question it is given R and Rw.

Which is considered in Dupuit's confined aquifer equation.

In Dupuit's method, the integration limit is considered is R and Rw.

Where R = radius of influence.

Rw = radius of the main pumped well.

While in Thiem's formula for confined aquifers it is given r2 and r1,

In Thiem's formula the integration limit is considered is r2 and r1.

Where r2 and r2 = radii of two observation wells.

Which is considered in Dupuit's confined aquifer equation.

In Dupuit's method, the integration limit is considered is R and Rw.

Where R = radius of influence.

Rw = radius of the main pumped well.

While in Thiem's formula for confined aquifers it is given r2 and r1,

In Thiem's formula the integration limit is considered is r2 and r1.

Where r2 and r2 = radii of two observation wells.

Satish Verma said:
6 years ago

Option A is right.

Roop Kumar said:
6 years ago

Dupits for unconfined aquifer.

Garry said:
7 years ago

The correct answer is B.

Garry said:
7 years ago

This equation for confined well obtained from steady flow using darcy equation and the equation achieved is called Thieme's equation.

Roy said:
7 years ago

Yes, A is the correct answer.

Bhaskar said:
7 years ago

Thiem's equation is the correct answer.

Pritamdas said:
7 years ago

Dupit is correct. I agree.

Vikas chauhan said:
7 years ago

You are right @Praveen.

Because Dupuits formula is for unconfined tube wells.

Because Dupuits formula is for unconfined tube wells.

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