Edit filter log

Details for log entry 6633837

21:57, 4 April 2012: 72.241.53.50 (talk) triggered filter 384, performing the action "edit" on Wells turbine. Actions taken: Disallow; Filter description: Addition of bad words or other vandalism (examine)

Changes made in edit

Action parameters

Variable	Value
Name of the user account (`user_name`)	'72.241.53.50'
Page ID (`page_id`)	11226479
Page namespace (`page_namespace`)	0
Page title without namespace (`page_title`)	'Wells turbine'
Full page title (`page_prefixedtitle`)	'Wells turbine'
Action (`action`)	'edit'
Edit summary/reason (`summary`)	'/* Annotation */ '
Whether or not the edit is marked as minor (no longer in use) (`minor_edit`)	false
Old page wikitext, before the edit (`old_wikitext`)	'[[Image:Wells turbine en.svg\|thumb]] The '''Wells turbine''' is a low-pressure [[Wind turbine\|air turbine]] that rotates continuously in one direction in spite of the direction of the air flow. Its blades feature a symmetrical [[airfoil]] with its plane of symmetry in the [[plane of rotation]] and perpendicular to the air stream. It was developed for use in oscillating-water-column [[wave power]] plants, in which a rising and falling water surface moving in an air compression chamber produces an oscillating air current. The use of this bidirectional turbine avoids the need to rectify the air stream by delicate and expensive [[check valve]] systems. Its efficiency is lower than that of a turbine with constant air stream direction and asymmetric airfoil. One reason for the lower efficiency is that symmetric airfoils have a higher [[drag coefficient]] than asymmetric ones, even under optimal conditions. Also, in the Wells turbine, the symmetric airfoil is used with a high [[angle of attack]] (i.e., low blade speed / air speed ratio), as it occurs during air velocity maxima in volatile flow. A high angle of attack causes a condition known as "[[Stall (flight)\|stall]]" in which the airfoil loses lift. The efficiency of the Wells turbine in oscillating flow reaches values between 0.4 and 0.7. This simple but ingenious device was developed by Prof. [[Alan Arthur Wells]] of [[Queen's University Belfast]] in the late 1970s. == Annotation == Another solution of the problem of stream direction independent turbine is the [[Darrieus wind turbine]] (Darrieus rotor). ==See also== [[Siadar Wave Energy Project]] [[Yoshio Masuda]] [http://www.wetgen.com Hanna Wave Energy Turbine] == External links == [http://www.uni-leipzig.de/~grw/lit/texte_099/59__1999/59_1999_hansa.htm about wave power generation in general with part on wells turbine] {{de icon}} * [http://www.archipelago.co.uk/our-work/wave-power-animation Animation showing OWC wave power plant"] [[Category:Queen's University Belfast]] [[Category:Mechanical engineering]] [[Category:Turbines]] [[Category:Power station technology]] [[Category:Renewable energy technology]] [[Category:Water power]] [[Category:Electrical generators]] [[de:Wells-Turbine]] [[fr:Turbine Wells]] [[hr:Wellsova turbina]] [[it:Turbina Wells]] [[nl:Wellsturbine]] [[pt:Turbina Wells]] [[ru:Турбина Уэльса]]'
New page wikitext, after the edit (`new_wikitext`)	'[[Image:Wells turbine en.svg\|thumb]] The '''Wells turbine''' is a low-pressure [[Wind turbine\|air turbine]] that rotates continuously in one direction in spite of the direction of the air flow. Its blades feature a symmetrical [[airfoil]] with its plane of symmetry in the [[plane of rotation]] and perpendicular to the air stream. It was developed for use in oscillating-water-column [[wave power]] plants, in which a rising and falling water surface moving in an air compression chamber produces an oscillating air current. The use of this bidirectional turbine avoids the need to rectify the air stream by delicate and expensive [[check valve]] systems. Its efficiency is lower than that of a turbine with constant air stream direction and asymmetric airfoil. One reason for the lower efficiency is that symmetric airfoils have a higher [[drag coefficient]] than asymmetric ones, even under optimal conditions. Also, in the Wells turbine, the symmetric airfoil is used with a high [[angle of attack]] (i.e., low blade speed / air speed ratio), as it occurs during air velocity maxima in volatile flow. A high angle of attack causes a condition known as "[[Stall (flight)\|stall]]" in which the airfoil loses lift. The efficiency of the Wells turbine in oscillating flow reaches values between 0.4 and 0.7. This simple but ingenious device was developed by Prof. [[Alan Arthur Wells]] of [[Queen's University Belfast]] in the late 1970s. == Annotation == Another solution of the problem of stream direction independent turbine is the [[Darrieus wind turbine]] (Darrieus rotor). fuck me in the ass ==See also== [[Siadar Wave Energy Project]] [[Yoshio Masuda]] [http://www.wetgen.com Hanna Wave Energy Turbine] == External links == [http://www.uni-leipzig.de/~grw/lit/texte_099/59__1999/59_1999_hansa.htm about wave power generation in general with part on wells turbine] {{de icon}} * [http://www.archipelago.co.uk/our-work/wave-power-animation Animation showing OWC wave power plant"] [[Category:Queen's University Belfast]] [[Category:Mechanical engineering]] [[Category:Turbines]] [[Category:Power station technology]] [[Category:Renewable energy technology]] [[Category:Water power]] [[Category:Electrical generators]] [[de:Wells-Turbine]] [[fr:Turbine Wells]] [[hr:Wellsova turbina]] [[it:Turbina Wells]] [[nl:Wellsturbine]] [[pt:Turbina Wells]] [[ru:Турбина Уэльса]]'
Whether or not the change was made through a Tor exit node (`tor_exit_node`)	0
Unix timestamp of change (`timestamp`)	1333576637