1. Hidrodinámica Estuarina
Arnoldo Valle-Levinson
University of Florida
Civil and Coastal Engineering Department
Gainesville, Florida

2. What is an estuary? Estuaries Coastal lagoons
Semi-enclosed coastal body of water
free communication with ocean
ocean salinity is measurably diluted by runoff

3. Typical Estuarine Circulation

4. Review of conservation equations
Mass and Momentum

5. Boussinesq approximation
This is the Continuity Equation or Equation of Conservation of Mass

6. z x
Continuity Equation in Bulk Form:

7. Advection-Diffusion Equation
Conservation of Salt:
At steady state and assuming constant diffusivities:
Advection-Diffusion Equation
Further assuming motion in one direction and
integrated over the volume considered,
the statement of CONSERVATION OF SALT may be given as:
Vin Sin = Vout Sout

8. z Sb S0 x
Continuity Equation in Bulk Form:
Salt Conservation Equation in Bulk Form: VbSb = V0S0

9. Conservation of Salt:
Conservation of Heat:
Equation of State:

10. Conservation of Momentum (Equations of Motion)