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Ship Bilge Keel Roll Damping & Eddy Shedding Calculator

Easily calculate and compute ship bilge keel roll damping & eddy shedding calculator with accurate equations, live formulas, and expert guidance.

Longitudinal length of fin.

Perpendicular projection from hull.

Radial arm from center of roll to keel.

Single amplitude roll.

Natural period of roll.

Calculated Result
1,207.72 kN·m

Roll Damping Moment

Roll Damping Moment

1,207.72 kN·m

Damping Moment Knm

1207.7168742759757

Damping Force Kn

86.26549101971254

V Max M Per Sec

1.315947253478581

Total Area M2

54

1,207.72 — kN·m

Calculation Breakdown

  1. Applied FormulaSizes passive bilge keel appendages on the turn of the bilge, evaluating cross-flow vortex shedding drag that dampens resonant wave roll motions.M_{\text{bk}} = C_D \rho \left( \omega \cdot r_{\text{bk}} \right)^2 A_{\text{bk}} r_{\text{bk}}

Bilge Keel Damping Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.03026049061.2kRoll Damping Moment

What Is the Ship Bilge Keel Roll Damping & Eddy Shedding Calculator?

This tool computes ship bilge keel roll damping & eddy shedding calculator with high precision arithmetic.

How Does the Ship Bilge Keel Roll Damping & Eddy Shedding Calculator Work?

Sizes passive bilge keel appendages on the turn of the bilge, evaluating cross-flow vortex shedding drag that dampens resonant wave roll motions.

Ship Bilge Keel Roll Damping & Eddy Shedding Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Mbk=CDρ(ω⋅rbk)2AbkrbkM_{\text{bk}} = C_D \rho \left( \omega \cdot r_{\text{bk}} \right)^2 A_{\text{bk}} r_{\text{bk}}

Sizes passive bilge keel appendages on the turn of the bilge, evaluating cross-flow vortex shedding drag that dampens resonant wave roll motions.

How to Use the Ship Bilge Keel Roll Damping & Eddy Shedding Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Ship Bilge Keel Roll Damping & Eddy Shedding Calculator Example

Input Values:

keelLengthM:45
keelDepthMm:600
bilgeRadiusM:14
rollAmplitudeDeg:12
rollPeriodSec:14
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kN·m.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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