Hello Mohammed,
There is no need to use loops here. MATLAB works great with vectors and is designed for this purpose. I hope this example helps you. I have changed the definition of Pressure_Out, because Pressure_In1 is zero.
If you multiply vectors element by element you have to proceed like A .* B, don't forget the period.
% Constants
omega = 1000; %rotation frequency (rpm)
omega_rad = (omega*2*pi)/60; %rotation frequency (rad/s)
TRot = (360*(pi/180))/omega_rad; %Time of one rotation
Holes = 15; %Number of holes in Cylinder
Pressure_In1 = 0; %Pressure Amplitude in Bar
Pressure_In2 = 1; %Pressure Amplitude in Bar
alpha = 360/Holes; %angles between holes (degree)
beta = 11.20; %angles swept by 1 hole (degree)
alpha_rad = alpha*(pi/180); %angles between holes (rad)
beta_rad = beta*(pi/180); %angles swept by 1 hole (rad)
k = TRot/100; %timestep
% Define vector variables [initial value:step:final value]
N = 1:1:Holes;
time = 0:k:TRot;
% Computations
s = (alpha_rad / omega_rad) + N * (pi/Holes);
Pressure_Out = Pressure_In2 * time;
% Plot
plot(time, Pressure_Out)
xlabel('Time [s]', 'fontsize', 16, 'Interpreter', 'latex');
ylabel('Pressure [bar]', 'fontsize', 16, 'Interpreter', 'latex');
