Correct way to simulate and visualize 230V AC voltage in LTSpice IV
The 230V is RMS voltage, which for a sine wave, is \$\frac{V_{PEAK}}{\sqrt{2}}\$. SPICE takes the voltage as peak volts, so whatever RMS sine wave voltage you want, just multiply it by ~1.414 and use that. 

You may as well get used to converting back and forth between RMS, peak, and peak-to-peak voltage- you'll need to do so early and often. 

230V RMS, 325V peak and 650V peak-to-peak all describe the same sine wave. 

Frequency is given in Hz rather than radians/second, but you'll also often have to convert between frequency and angular frequency (by multiplying by \$2\cdot\pi\$ for angular frequency since there are \$2\pi\$ radians in a circle ). 

Here is an introductory tutorial on LTSPICE from a Canadian University (Laurier).