Experimental and numerical study of the temperature evolution in hydrogen cylinder under fast-refueling process

•The highest temperature of 82.972 °C is located at the bottom of cylinder.•The flow velocity increases to 202.41 m/s at the first second and then decreases.•The temperature rises to maximum exponentially at the first 30 s of filling.•The temperature is almost above 85 °C except for the first 10 s when the ambient is 40 °C.