For a successful team how frequently should a team leader meet his/her team members.

No everyday is overkill and non productive.  One a week a brief meeting for about20 minutes is fine.  Then the monthly meetings should be in detail.

I think everyday because it will be a challenge for them to come up with new ideas, brainstorming, it will improve their skills to come up a better project. Remember communication is very important in everyone else.

The meeting shouldn't too less so that sub-ordinates don't feel neglected and their work isn't appreciated much. On the other hand if meetings are too frequent, sub-ordinates would tend to bog down and consider it as a burden to them apart from extra work.

Hence coming to your answer, It can be made daily with the Team leader appreciating the daily acheivements and also discuss the ways to improve in failures with a Light sense of mood. It is best to have weekly twice. One in the start of the week say Monday and discuss the progress on say Saturday.

I think,more frequent meeting of team leader is effective for a team.There are some reasons...

1. It is important to make a feel in team member's mind that their contribution is really significant for the company and they are also a key part of the company.

2. Team members get some work pressure which helps to increase productivity.

3.Team members can reduce some stress from their head because their leader guide them.

4.Team members  get confidence  and feel relax about their performance evaluation because their leader knows their performance.So,employees will try to do more to show their performance to their leader.

Before start of each job, progress meeting once a week, every time there is a change to the procedures (management of change), every time identifying there is a risk (risk assessment), end of job (lesson learned).

The frequency of meeting depend on many things, e.g. number of team members, objectives and targets they required to meet , etc, Hence, a team leader should arrange the frequency of meetings, but a5 minutes daily safety talk with team members is vital. 

team leader should take into consideration DIBYA NAYAK comment (stated below) when he/she  arranged the frequency of meetings.

'The meeting shouldn't too less so that sub-ordinates don't feel neglected and their work isn't appreciated much. On the other hand if meetings are too frequent, sub-ordinates would tend to bog down and consider it as a burden to them apart from extra work.'

Everyday, meeting with them for   minutes as maximum.

Impossible to answer without knowing the dimensions of a team and its distribution in various locations. A team of 500 in various offices in Italy / Dubai /New York or a team of 4 in the same office? If the latter is the hypothesis, there is probably no need to organise formal meetings, as information flows constantly. A team of 30 distributed in a couple of locations may need to meet at least once a month physically, but may be more frequently if deadlines of a project are approaching, or in a crisis situation.