what is natural convection
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Natural convection is a type of flow, of motion of a liquid such as water or a gas such as air, in which the fluid motion is not generated by any external source (like a pump, fan, suction device, etc.) but by some parts of the fluid being heavier than other parts. The driving force for natural convection is gravity.
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ɴᴀᴛᴜʀᴀʟ ᴄᴏɴᴠᴇᴄᴛɪᴏɴ ɪs ᴀ ᴛʏᴘᴇ ᴏғ ғʟᴏᴡ, ᴏғ ᴍᴏᴛɪᴏɴ ᴏғ ᴀ ʟɪǫᴜɪᴅ sᴜᴄʜ ᴀs ᴡᴀᴛᴇʀ ᴏʀ ᴀ ɢᴀs sᴜᴄʜ ᴀs ᴀɪʀ, ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ғʟᴜɪᴅ ᴍᴏᴛɪᴏɴ ɪs ɴᴏᴛ ɢᴇɴᴇʀᴀᴛᴇᴅ ʙʏ ᴀɴʏ ᴇxᴛᴇʀɴᴀʟ sᴏᴜʀᴄᴇ (ʟɪᴋᴇ ᴀ ᴘᴜᴍᴘ, ғᴀɴ, sᴜᴄᴛɪᴏɴ ᴅᴇᴠɪᴄᴇ, ᴇᴛᴄ.) ʙᴜᴛ ʙʏ sᴏᴍᴇ ᴘᴀʀᴛs ᴏғ ᴛʜᴇ ғʟᴜɪᴅ ʙᴇɪɴɢ ʜᴇᴀᴠɪᴇʀ ᴛʜᴀɴ ᴏᴛʜᴇʀ ᴘᴀʀᴛs. ... ᴛʜᴇ ᴅʀɪᴠɪɴɢ ғᴏʀᴄᴇ ғᴏʀ ɴᴀᴛᴜʀᴀʟ ᴄᴏɴᴠᴇᴄᴛɪᴏɴ ɪs ɢʀᴀᴠɪᴛʏ.
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