RESPONSE STATISTICS CALCULATION FORMULA FOR IRREGULAR WAVE SPECTRUM

RESPONSE  STATISTICS

ØAverage height of the response (doubled amplitude)  , R_avg=2.5√(m_0 )

ØMaximum Height of the response, R_max=7.44√(m_0 )

ØRoot mean Square height of the response, R_rms=2√(2m_0 ) 

ØSignificant height of the response, R_s=4√(m_0 ) 

 

**where m0 is the area under the spectrum. 

MATLAB SCRIPT TO CHANGE TIME TO FREQUENCY DOMAIN

JUST COPY AND PASTE THE BELOW CODE


clc
clear all
close all

HS=5;
pcf=0.3;
cf1=0.1;
cf2=1.5;
n=100;

t=0:1:2000;

dt=t(2)-t(1);
dcf=(cf2-cf1)/(n-1);
omega=cf1:dcf:cf2;
nomega=length(omega);
cc=(5/16)*(HS^2);
sdeta=(cc)*((pcf^4)*(omega.^-5)).*(exp(-1.25*((pcf^4)*(omega.^-4))));

figure
plot(omega,sdeta,'k');
xlabel('\omega (rad/sec)')
ylabel('S_\eta_\eta (m^2sec)')
grid on


pheta=rand(nomega,1)*2*pi;
df=omega(2)-omega(1);
ns=length(sdeta);
w=omega;
tl=length(t);

for i=1:tl
    x1(i)=0;
    for j=1:n
         a1(j)=sqrt(2*sdeta(j)*df);
         x1(i)=x1(i)+a1(j)*cos(-w(j)*(t(i))+pheta(j));

    end
end

figure
plot(t,x1,'k')
xlabel('t (sec)')
ylabel('\eta (m)')
grid on

HYDRODYNAMIC ANALYSIS (RAO) OF SPAR PLATFORM IN ANSYS AQWA

ANSYS WORKBENCH TUTORIAL- SIMPLY SUPPORTED BEAM: SHEAR FORCE AND BENDING...

Stationkeeping (Ansys AQWA): Catenary Mooring lines for station keeping

ANSYS AQWA CAPABILITIES

GATE 2016- ADMISSION IN THE DEPARTMENT OF OCEAN ENGINEERING AND NAVAL ARCHITECTURE

Ocean Engineering and Naval Architecture (commonly known as OENA) course are basically offered by IIT Kharagpur and IIT Madras. The programe offered by these two IIT's are B tech, Dual degree, M Tech and MS by Research (not in IIT Kharagpur).

The above mentioned branch basically involves the study of ships and offshore structures.

Admission in B tech and Dual degree are offered on the basis of JEE scorecard where as admission in M tech and MS are offered through GATE score card.

M tech admission can be attained with all India GATE percentile anywhere between 98.5 to 99 %, MS admission also required the above mentioned percentile along with the grilling interview. 

 M tech is two years program whereas MS by research can be completed anywhere between 2.5 years to 3 years. Completing MS within 2 years is bit tough task specially in IIT Madras due to intense quality of research.

WHAT TO EXPECT FROM THESE COURSES:

1: Good understanding of ships, coastal structures (like break waters) and offshore structures;

2: Interaction with high end development of offshore technologies for renewable energies like wind, wave and tidal energies.

3: Expertise in Computational Fluid Dynamics and Finite element. Both the above mentioned IIT's are well equipped with the facility and faculty which can be exploited to attain these higher end knowledge.