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New method lets scientists peer deeper into the ocean（图）
New method scientists peer deeper ocean
2020/8/14
Researchers at Old Dominion University and the Bigelow Laboratory for Ocean Sciences have discovered a new way of seeing into the sea's depths, an approach that allows them to detect algae blooms and ...
Method First, Results Later
marine sciences bills
2015/7/28
About ten years ago I participated in the first of a series of workshops sponsored by the National Science Foundation to determine ideal course content for a college undergraduate student's first clas...
Temperature- and cholesterol-induced changes in eicosapentaenoic acid limitation of Daphnia magnadetermined by a promising method to estimate growth saturation thresholds
Temperature cholesterol-induced changes in eicosapentaenoic acid limitation Daphnia magnadetermined a promising method estimate growth saturation thresholds
2014/4/8
We present data on eicosapentaenoic acid (EPA)-limited growth responses ofDaphnia magnaunder different temperatures and different dietary cholesterol availabilities to assess how EPA growth saturation...
Unstructured Grid Immersed Boundary Method for Numerical Simulation of Fluid Structure Interaction
fluid structure interaction immersed boundary method VOS unstructured grids finite volume method
2011/9/9
This paper presents an improved unstructured grid immersed boundary method. The advantages of both immersed boundary method and body fitted grids which are generated by unstructured grid technology ar...
Parameter Estimation with Constraints Based on Variational Method
least squares estimation parameter estimation variational method constraint
2011/9/9
The accuracy of parameter estimation is critical when digitally modeling a ship. A parameter estimation method with constraints was developed, based on the variational method. Performance functions an...
Power Flow Calculation Method of Large Shipboard Power System
power flow method node voltage method asynchronous motor transformer
2011/9/9
The effect of line voltage drop is considered larger on loads, especially on asynchronous motor, transformers and other non-linear load parameters in power system of large ships. A novel power flow me...
Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body
wave-current diffraction time-domain simulation drift force higher-order boundary element method
2011/9/9
To study wave-current actions on 3-D bodies a time-domain numerical model was established using a higher-order boundary element method (HOBEM). By assuming small flow velocities, the velocity potentia...
Use of a submodel method to check the bolt strength of marine equipment
submodel method gear case connection component shock-resistance
2011/9/13
A submodel method was proposed that works from computational models of marine gear cases to verify that the proposed bolts will give it sufficient structural integrity. Calculations for marine equipme...
A method for testing drag-reduction on riblet surfaces based on the Spalding formula
Spalding formula riblet surface drag-reduction testing
2011/9/13
This paper presents a method based on the Spalding formula for testing drag-reduction on riblet surfaces. Its advantage lies in that it is more convenient and yields more precise data compared with te...
Using the surface panel method to predict the steady performance of ducted propellers
surface panel method ducted propeller velocity potential iteration steady hydrodynamic performance
2011/9/13
A new numerical method was developed for predicting the steady hydrodynamic performance of ducted propellers. A potential based surface panel method was applied both to the duct and the propeller, and...
The research on the highly efficient calculation method of 3-D frequency-domain Green function
frequency-domain Green function numerical approximation Gaussian integral
2011/9/13
The traditional calculation method of frequency-domain Green function mainly utilizes series or asymptotic expansion to carry out numerical approximation, however, this method requires very careful zo...
Three-dimensional numerical simulation of the flow past a circular cylinder based on LES method
LES method three-dimensional flow past circular cylinder hydrodynamic characteristics
2011/9/13
The hydrodynamic characteristics of a rigid, single, circular cylinder in a three dimensional, incompressible, uniform cross flow were calculated using the large-eddy simulation method of CFX5. Soluti...
An Investigation of Longitudinal Motion of the Slender-type Body at Fully Submerged CondituinPart 3 On the Experimental and Empirical Estimation Method of the Hydrodynamic Stability Derivatives
Longitudinal Motion Slender-type Body Hydrodynamic Stability Derivatives
2009/4/29
This paper consists of two parts. The first part is on the outline of renewd large forced motion machanism to be used in the maneuvering test on submerged body and surface ship model in the large towi...
Measurement Method of Turbidity Depth Profiles using ADCP for Monitoring of Coastal Sea Area
Turbidity Depth Profiles ADCP Coastal Sea Area
2009/4/8
At stormy weather, dredging and filling operation and so on, the water with high concentrations of solids arises in coastal sea area. Growth of seaweed and algae is obstructed to interrupt sunlight b...
Measurement method of the concentration of matter using optical property of seawater in visible wavelength range
concentration of matter optical property seawater visible wavelength range
2009/4/8
It is known that ocean color depends on contained materials in seawater. It is possible to use it for detecting significant information of sea. Since the reflection and absorbance of light can be ex...