<p>I assume you are talking about the fluid dynamics description of flux, which is the rate of volume flow across a unit area.</p>

<p><strong>1.</strong> </p>

<blockquote>
  <p>Is flux simply specific discharge × area?</p>
</blockquote>

<p>Yes you are correct.</p>

<p>$$Specific~Discharge = \frac{Volumetric~Flux}{Area}$$</p>

<p>therefore</p>

<p>$$Volumetric~Flux = Specific~Discharge~\cdot~Area$$</p>

<p><strong>2.</strong> </p>

<blockquote>
  <p>And when we speak of flux of an element eg. N-flux, is that specific
  discharge × concentration × area?</p>
</blockquote>

<p>When you speak of an element the rationale is the same but will depend on whether the model you are devising contains 1D, 2D or 3D fluid elements. The latter is defined as above.</p>

CC BY-SA 3.0
2015-01-14T05:17:31.313Z
2015-01-14T05:17:31.313Z
Isopycnal Oscillation
<p>How are specific discharge and flux linked?</p>

<p>Is flux simply <code>specific discharge × area</code>? And when we speak of flux of an element eg. N-flux, is that <code>specific discharge × concentration × area</code>?</p>

<hydrology>
The relationship between specific discharge and flux
Bprodz
# The relationship between specific discharge and flux

(Asked by: username_0 on 2014-06-11)

How are specific discharge and flux linked?

Is flux simply `specific discharge × area`? And when we speak of flux of an element eg. N-flux, is that `specific discharge × concentration × area`?

**Tags:** hydrology


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## 1 answers

### Answer by username_1 on 2015-01-14. Score: 7 | Accepted answer

I assume you are talking about the fluid dynamics description of flux, which is the rate of volume flow across a unit area.

**1.**

> Is flux simply specific discharge × area?

Yes you are correct.

$$Specific~Discharge = \frac{Volumetric~Flux}{Area}$$

therefore

$$Volumetric~Flux = Specific~Discharge~\cdot~Area$$

**2.**

> And when we speak of flux of an element eg. N-flux, is that specific
> discharge × concentration × area?

When you speak of an element the rationale is the same but will depend on whether the model you are devising contains 1D, 2D or 3D fluid elements. The latter is defined as above.


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