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lecture07 - Tidal Power Origin of tides Tide power Tidal...

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ENGRI 1290 1 Tidal Power Origin of tides Tide power Tidal energy converters
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ENGRI 1290 2 Lecture’s objectives Learning the physical mechanisms driving ocean tides Understanding how tidal motion can generate energy Presenting the different means to convert tidal motion into energy
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ENGRI 1290 3 The origins of tides I The Moon 50% on the effect The Sun The other 50% Ocean tides on Earth are due to: Let’s look at the effect of the moon only. The Earth The Moon Not drawn to scale h( ) The height of water h( ) changes during the day as the Earth rotates around its axis.
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ENGRI 1290 4 The origins of tides II High tide Low tide Low tide High tide Because of the sun’s influence and other factors, the time period of tides can vary from 6 to 10 hours. Tides also widely vary in height and in strength. This is mainly due to local underwater terrain topology. The average tide height is 40 cm.
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