given_data.m

用无网格法计算VAN DE POL 振子

% THIS .M file contains the physical parameters of riser and the ralative
% parameters of fluid.
% their names are introduced in the main programm.
%
v_c = 0.1;             % m/s
v_i = 0;               % m/s

rho_r = 7700;          % kg/m^3
rho_i = 800;           % kg/m^3
rho_w = 1025;          % kg/m^3
L = 100;               % m
Deep_w = 100;          % m

g = 9.8;               % m/s^2
T_w = 12;              % s
% hight of wave
H = 4.0;               % m
omega_w = 0.5938;      % rad/s
k = omega_w^2/g;

D_in = 0.216;          % m
D_out = 0.25;          % m
% Posion ratio
pr = 0.2;    
E = 2.1e11;            % Pa
I = (D_out^4-D_in^4)/64;          % m^4
EI = E*I;
Area = pi*(D_out^2-D_in^2)/4;     % m^2
C_s = 2*(rho_r*Area)*sqrt(EI/rho_r*Area^2)*0.002; % ??

T_top = 200e3;         % N
P_top = 1e6;           % Pa

C_L0 = 0.3;
C_m = 1.0;
C_D0 = 0.8;

% Strouhal number
St = 0.18;
epsilon = 0.3;
Amp = 12;