What is the tidal prism?

Tidal prism P = Volume entering/leaving estuary each tide = A·Δh where A = intertidal area, Δh = tidal range. Controls inlet stability; O Brien relationship: A_inlet ∝ P^0.85.

How is flushing time calculated for an estuary?

Flushing time T_f = V_estuary / (n × P) where n = tidal flushing efficiency (typically 0.5-0.9), P = tidal prism. Used to assess pollutant residence times.

What determines tidal inlet stability?

Inlet stability depends on the ratio of tidal prism to littoral drift. High prism/drift ratio maintains open, deep inlets. Low ratio causes shoaling and inlet migration.

Tidal Flow Rate Calculator

Calculate tidal prism volume and peak flow through inlets. Tidal prism P = A·Δh. Peak velocity V_peak = Q_peak/A_inlet. Tidal exchange coefficient and flushing time for coastal embayments.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate tidal prism volume and peak flow through inlets. Tidal prism P = A·Δh. Peak velocity V_peak = Q_peak/A_inlet. Tidal exchange coefficient and flushing time for coastal embayments. Use the tidal flow rate result to inform your clinical assessment.

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Frequently Asked Questions

What is the tidal prism?

How is flushing time calculated for an estuary?

What determines tidal inlet stability?