Unlock the bootloader on your phone and follow one of the tutorials to get your computer environment set up (you need usb drivers, ADB and fastboot)
Once you have that set up, it's easy.
Specificly on the One V:
-restart your phone and hold down the volume-down button to go into the bootloader mode.
-Once in bootloader mode, select fastboot
-Connect the phone to your computer via USB cable. Make sure you have USB debugging checked and that you're in "charge only" mode. Fastboot will change to fastboot usb
-On your computer, run fastboot in a terminal or command prompt on Windows
The command to flash the kernel onto your phone is:
fastboot flash boot boot.img
If you just want to try it out, you can boot the kernel without flashing:
fastboot boot boot.img